{"id":237,"date":"2015-11-18T16:59:52","date_gmt":"2015-11-18T23:59:52","guid":{"rendered":"https:\/\/astfilters.com\/?page_id=237"},"modified":"2026-07-22T09:43:19","modified_gmt":"2026-07-22T15:43:19","slug":"aquaculture-filters-ras","status":"publish","type":"page","link":"https:\/\/astfilters.com\/aquatic-systems\/applications\/aquaculture-filters-ras\/","title":{"rendered":"Aquaculture Filters &#038; Recirculating Aquaculture Systems"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Breadcrumbs&#8221; _builder_version=&#8221;4.21.0&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#363636&#8243; custom_margin=&#8221;10px||0px||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_module=&#8221;2946&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;15px||15px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][lwp_divi_breadcrumbs font_icon=&#8221;&#x45;||divi||400&#8243; link_color=&#8221;#ffffff&#8221; separator_color=&#8221;#ffffff&#8221; current_text_color=&#8221;#ffffff&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/lwp_divi_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; fullwidth=&#8221;on&#8221; _builder_version=&#8221;4.16&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_fullwidth_header title=&#8221;Aquaculture Filters &#038; Recirculating Aquaculture Systems&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; title_text_align=&#8221;center&#8221; background_color=&#8221;rgba(18,68,112,0.8)&#8221; background_image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/10\/annie-spratt.jpg&#8221; background_blend=&#8221;multiply&#8221; height=&#8221;235px&#8221; max_height=&#8221;235px&#8221; custom_padding=&#8221;80px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_fullwidth_header][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;section&#8221; _builder_version=&#8221;4.18.0&#8243; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row admin_label=&#8221;row&#8221; _builder_version=&#8221;4.16&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2 style=\"text-align: center;\">Aquaculture Filtration Technology Backed by 20+ Years of RAS Engineering<\/h2>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;3_5,2_5&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_5&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">A recirculating aquaculture system is only as reliable as its filtration. Every component in the water treatment loop \u2014 solids removal, biofiltration, gas exchange, disinfection \u2014 has to perform consistently under heavy organic loads, day after day. When filtration falls short, water quality deteriorates, fish become stressed, and production suffers.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">AST has spent over two decades engineering aquaculture filter systems for RAS operations around the world. Our bead filter technology combines mechanical and biological filtration in a single vessel, giving you a simpler, more reliable water treatment loop with fewer components to manage and fewer points of failure.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;2_5&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/11\/large-aquaculture-facility-propeller-bead-filters.jpg&#8221; title_text=&#8221;large-aquaculture-facility-propeller-bead-filters&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||10px||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; border_radii=&#8221;on|10px|10px|10px|10px&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;13px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"text-align: center;\"><i>Large aquaculture facility utilizing multiple Propeller Bead Filters.<\/i><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3>How Filtration Works in a Recirculating Aquaculture System<\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">A recirculating aquaculture system continuously treats and reuses water rather than relying on a constant supply of fresh inflow. That makes the filtration system the most critical infrastructure in the facility \u2014 it&#8217;s what allows you to maintain safe ammonia, nitrite, and dissolved oxygen levels at commercial stocking densities.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">In a typical RAS, water leaving the culture tanks passes through a series of treatment stages:<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Solids removal<\/strong> captures uneaten feed, fecal matter, and other particulates before they break down and create additional biological oxygen demand. <strong>Biofiltration<\/strong> \u2014 often the most important and most complex stage \u2014 uses nitrifying bacteria to convert toxic ammonia into nitrite and then into relatively harmless nitrate. After that, <strong>degassing<\/strong> strips dissolved carbon dioxide, and <strong>disinfection<\/strong> (typically UV or ozone) reduces pathogen loads before clean water returns to the tanks.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Most recirculating aquaculture system designs require separate equipment for each of these stages. AST&#8217;s approach simplifies the two most demanding steps \u2014 solids capture and biofiltration \u2014 by handling both in a single bead filter unit. This reduces equipment footprint, cuts down on plumbing complexity, and gives you fewer systems to monitor and maintain.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;gcid-a3f402e7-f4aa-4b4a-a6b8-25d3cf44cccd&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{%22gcid-a3f402e7-f4aa-4b4a-a6b8-25d3cf44cccd%22:%91%22background_color%22%93}&#8221;][et_pb_row column_structure=&#8221;1_3,2_3&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/11\/Broodstock-facility-polygeyser-filter.jpg&#8221; title_text=&#8221;Broodstock-facility-polygeyser-filter&#8221; show_in_lightbox=&#8221;on&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||10px||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; border_radii=&#8221;on|10px|10px|10px|10px&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;13px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"text-align: center;\"><i>Red drum broodstock facility utilizing a PolyGeyser filter.<\/i><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_css_main_element=&#8221;margin: auto;&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<div class=\"content col-12 col-sm-8\">\n<h3>Why Bead Filtration for Aquaculture?<\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Not all aquaculture biofilter technologies are created equal. Trickling filters can clog and lose efficiency under heavy loads. Drum filters handle solids but contribute nothing to nitrification. Sand filters require frequent backwashing and can channel under high organic conditions. Each has a role, but each also has significant limitations in demanding RAS applications.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">AST&#8217;s enhanced bead media was developed specifically for aquaculture filtration. The beads provide 400 ft\u00b2 of surface area per cubic foot for bacterial colonization \u2014 enough to support robust nitrification even at the elevated ammonia levels common in dense grow-out and broodstock systems. At the same time, the media captures suspended solids down to fine particle sizes (100% of particles &gt;50 microns, 48% in the 5\u201310 micron range per pass), delivering mechanical clarification that most standalone biofilters can&#8217;t match.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The result is a true dual-function aquaculture filter: one unit that handles both the biological and mechanical workload of your recirculating system.<\/p>\n<\/div>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_orientation=&#8221;center&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3>AST Aquaculture Filter Systems at a Glance<\/h3>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;3_4,1_4&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;900px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_css_main_element=&#8221;margin: auto;&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>PolyGeyser\u00ae Filters<\/strong> \u2014 Our flagship line features patented pneumatic backwash with no moving parts or electronics. Frequent, gentle backwash cycles keep the biofilm thin and active, optimizing nitrification rates while flushing captured solids. Backwash water is recycled internally, minimizing water loss. Available in standard and High Profile configurations for different flow and pressure requirements.<\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;\/aquatic-systems\/products\/polygeyser-filters\/&#8221; button_text=&#8221;Learn More About PolyGeyser&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/df-e1455744256736.jpg&#8221; title_text=&#8221;df&#8221; url=&#8221;\/aquatic-systems\/products\/polygeyser-filters\/&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;3_4,1_4&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;900px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_css_main_element=&#8221;margin: auto;&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>Endurance\u2122 Filters<\/strong> \u2014 Compact, automated bead filters designed for smaller RAS installations or as supplemental filtration on larger systems. Ideal for pilot-scale aquaculture operations, quarantine systems, or research facilities.<\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;\/aquatic-systems\/products\/polygeyser-filters\/endurance-filters\/&#8221; button_text=&#8221;Learn More About Endurance&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2017\/06\/AST-Endurance-Filter-front-view-image2-e1478723878543.jpg&#8221; title_text=&#8221;AST-Endurance-Filter-front-view-image2-e1478723878543&#8243; url=&#8221;\/aquatic-systems\/products\/polygeyser-filters\/endurance-filters\/&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;3_4,1_4&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;900px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_css_main_element=&#8221;margin: auto;&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>Propeller Bead\u00ae Filters<\/strong> \u2014 Built for high-volume commercial operations, these filters use a motorized propeller for aggressive mechanical backwash while maintaining the biological performance of the bead media. Suited for large-scale recirculating aquaculture facilities with heavy feed loads.<\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;\/aquatic-systems\/products\/propeller-bead-filters\/&#8221; button_text=&#8221;Learn More About Propeller Bead&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2016\/01\/propeller-bead-filter2-large-e1502230967617.jpg&#8221; title_text=&#8221;propeller-bead-filter2-large&#8221; url=&#8221;\/aquatic-systems\/products\/propeller-bead-filters\/&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;3_4,1_4&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;900px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_css_main_element=&#8221;margin: auto;&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong>Bubble Bead\u00ae Filters<\/strong> \u2014 A proven, manually backwashed bead filter that remains a reliable workhorse for a wide range of aquaculture applications where simplicity and low upfront cost are priorities.<\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;\/aquatic-systems\/products\/bubble-bead-filters\/&#8221; button_text=&#8221;Learn More About Bubble Bead&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/11\/BBF-no-shadow-front-view-e1537465543178.jpg&#8221; title_text=&#8221;BBF no shadow front view&#8221; url=&#8221;\/aquatic-systems\/products\/bubble-bead-filters\/&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3 style=\"text-align: center;\">Are You Planning a Large Facility or Complex Aquaculture Project?<\/h3>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;3_5,2_5&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;3_5&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.7&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]Our engineering team can help conceptualize, design, and create a\u00a0complete custom system that is\u00a0tailored to your specific needs.\u00a0From design to installation, the engineers at AST are ready to apply over 20 years of biofiltration experience to your large scale operation.<\/p>\n<h4>Find out today how we can build an aquaculture filter system that works for you!<\/h4>\n<p>Call:\u00a0<a href=\"tel:8009393659\">800.939.3659<\/a>\u00a0or[\/et_pb_text][et_pb_button button_url=&#8221;\/aquatic-systems\/request-a-quote\/&#8221; button_text=&#8221;Request a No Cost Consultation&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column][et_pb_column type=&#8221;2_5&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2018\/02\/Linda-100ppi.jpg&#8221; title_text=&#8221;Linda-100ppi&#8221; show_in_lightbox=&#8221;on&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;80px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_testimonial quote_icon_color=&#8221;gcid-d60ab2b0-6934-45e6-92a7-e96017b73170&#8243; quote_icon_background_color=&#8221;#FFFFFF&#8221; use_icon_font_size=&#8221;on&#8221; icon_font_size=&#8221;64px&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; author_text_align=&#8221;center&#8221; background_color=&#8221;gcid-a3f402e7-f4aa-4b4a-a6b8-25d3cf44cccd&#8221; custom_padding=&#8221;70px||30px||false|false&#8221; global_colors_info=&#8221;{%22gcid-d60ab2b0-6934-45e6-92a7-e96017b73170%22:%91%22quote_icon_color%22%93,%22gcid-a3f402e7-f4aa-4b4a-a6b8-25d3cf44cccd%22:%91%22background_color%22%93}&#8221;]<\/p>\n<h3 style=\"text-align: center; color: #4c93bf;\"><em>&#8220;[AST] Filters are simple, but very effective. They don&#8217;t have a lot of components, [but] handle solids and biofiltration very well.&#8221;<\/em><\/h3>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><strong>Justin Yost, Fisheries Biologist, South Carolina Department of Natural Resources<\/strong><br \/>Used on broodstock tanks for replenishing natural waterways.<\/p>\n<p>[\/et_pb_testimonial][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;gcid-a3f402e7-f4aa-4b4a-a6b8-25d3cf44cccd&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{%22gcid-a3f402e7-f4aa-4b4a-a6b8-25d3cf44cccd%22:%91%22background_color%22%93}&#8221;][et_pb_row _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2 style=\"text-align: center;\">Aquaculture Projects<\/h2>\n<p>[\/et_pb_text][dsm_card_carousel slide_to_show=&#8221;4&#8243; autoplay=&#8221;off&#8221; equal_height=&#8221;on&#8221; dots=&#8221;off&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; body_font_size=&#8221;13px&#8221; custom_margin=&#8221;||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][dsm_card_carousel_child admin_label=&#8221;IMG_4244&#8243; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2017\/05\/IMG_4244.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2017\/05\/IMG_4244.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">High Profile PolyGeyser (HPPG) used for a 45,000 gallon koi pond. Includes pump, filter, and UV system in the configuration.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;Aquaculture-Endurance&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2016\/08\/Aquaculture-Endurance.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2016\/08\/Aquaculture-Endurance.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">Small scale, backyard tilapia grow operation\u00a0with insulated boards &amp; airlift operation.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;Broodstock-image-Paul-1&#8243; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2016\/06\/Broodstock-image-Paul-1.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2016\/06\/Broodstock-image-Paul-1.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">Red drum broodstock facility utilizing a\u00a0PolyGeyser filter.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;trailer-mounted-bead-filters-oyster-hatchery&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/trailer-mounted-bead-filters-oyster-hatchery.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/trailer-mounted-bead-filters-oyster-hatchery.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">Trailer mounted PBF 5s at Grand Isle LA Oyster Hatchery. This mobile system allows them to hook it up to any pond requiring filtration.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;bead-filters-at-marine-fish-hatchery-in-ms&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/bead-filters-at-marine-fish-hatchery-in-ms.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/bead-filters-at-marine-fish-hatchery-in-ms.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">One DF-3 Polygeyser\u00ae filter used on a saltwater system for the grow out of marine fish for stock enhancement.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;propeller-bead-filters-in-marine-fish-hatchery-rompin-malaysia&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/propeller-bead-filters-in-marine-fish-hatchery-rompin-malaysia.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/propeller-bead-filters-in-marine-fish-hatchery-rompin-malaysia.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">PBF-25 installed in a marine fish hatchery in Rompin, Malaysia.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;propeller-bead-filter-on-shrimp-hatchery-in-florida&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/propeller-bead-filter-on-shrimp-hatchery-in-florida.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/propeller-bead-filter-on-shrimp-hatchery-in-florida.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\"><span class=\"lb-caption\">PBF-10S being used for a shrimp hatchery in Florida.<\/span><\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;calagary-raven-fish-hatchery-bead-filter&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/calagary-raven-fish-hatchery-bead-filter.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/calagary-raven-fish-hatchery-bead-filter.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\">PBF-10 used for fish hatchery in Calgary, Alberta.<\/p>\n<p>[\/dsm_card_carousel_child][dsm_card_carousel_child admin_label=&#8221;private-residence-koi-holding-indonesia&#8221; image=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/private-residence-koi-holding-indonesia.jpg&#8221; image_background_height=&#8221;300px&#8221; image_popup=&#8221;on&#8221; image_popup_src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/private-residence-koi-holding-indonesia.jpg&#8221; button_url_new_window=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; parent_button=&#8221;off&#8221; parent_header_level=&#8221;h4&#8243;]<\/p>\n<p style=\"text-align: center;\">Private facility koi system. This system is filtered by three filters of our model BBF-XS4000\/BBF-XS6000S.<\/p>\n<p>[\/dsm_card_carousel_child][\/dsm_card_carousel][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_3,2_3&#8243; make_equal=&#8221;on&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_css_main_element=&#8221;margin: auto;&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2024\/09\/Shasta-Lake-HPPG-100.jpg&#8221; title_text=&#8221;Shasta-Lake-HPPG-100&#8243; show_in_lightbox=&#8221;on&#8221; _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; box_shadow_style=&#8221;preset1&#8243; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3 style=\"text-align: left;\">Why Buy an AST Bead Filter?<\/h3>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>Tested technology\u00a0<\/strong>\u2013 over 20 years of research and real-world application have proven bead filtration superiority<\/li>\n<li><strong>Energy savings<\/strong> \u2013 smaller pumps paired with efficient design<\/li>\n<li><strong>Low maintenance\u00a0<\/strong>\u2013 backwashing is quick and doesn\u2019t require you to get your hands dirty<\/li>\n<li><strong>Longevity\u00a0<\/strong>\u2013 media never needs replacement and is resistant to clogging and channeling<\/li>\n<li><strong>Excellent biofiltration\u00a0<\/strong>\u2013 media contains 400ft<sup>2<\/sup> of surface area per cubic foot for the biological breakdown of nitrogenous waste<\/li>\n<li><strong>Superior clarification<\/strong> \u2013 studies show that our filters remove 100% of particles greater than 50 microns and 48% of particles in the 5-10 micron range per pass<\/li>\n<li><strong>Water conserving technology\u00a0<\/strong>\u2013 our newest filters recycle their own backwash water, drastically reducing water loss!<\/li>\n<li><strong>One year warranty\u00a0<\/strong>\u2013 if there is a defect in filter manufacturing AST will provide a warranty replacement for up to one year from the date of shipment<\/li>\n<\/ul>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_module=&#8221;6600&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;900px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;20px&#8221; header_2_font=&#8221;|800|||||||&#8221; header_2_font_size=&#8221;60px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<div class=\"et_pb_module et_pb_text et_pb_text_30  et_pb_text_align_left et_pb_bg_layout_light\">\n<div class=\"et_pb_text_inner\">\n<h2 style=\"text-align: center;\">Let&#8217;s Discuss Your Project<\/h2>\n<p style=\"text-align: center; margin-top: 35px;\">From a simple filter to a complete custom system, our engineers can help you find the perfect filtration system for your needs. Get in touch today!<\/p>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;\/aquatic-systems\/request-a-quote\/&#8221; button_text=&#8221;Request a No Cost Consultation&#8221; button_alignment=&#8221;center&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_bg_color=&#8221;gcid-3e3bfd10-2030-43aa-ac04-8e6d63f67591&#8243; button_border_color=&#8221;gcid-3e3bfd10-2030-43aa-ac04-8e6d63f67591&#8243; custom_padding=&#8221;10px|50px|10px|50px|false|false&#8221; global_colors_info=&#8221;{%22gcid-3e3bfd10-2030-43aa-ac04-8e6d63f67591%22:%91%22button_bg_color%22,%22button_border_color%22%93}&#8221;][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><div class=\"et_pb_module lwp_divi_breadcrumbs lwp_divi_breadcrumbs_0\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module_inner\">\n\t\t\t\t\t<div class=\"lwp-breadcrumbs\"> <span class=\"before\"><\/span> <span vocab=\"https:\/\/schema.org\/\" typeof=\"BreadcrumbList\"><span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" href=\"https:\/\/astfilters.com\/aquatic-systems\/\" class=\"home\"><span property=\"name\">Home<\/span><\/a><meta property=\"position\" content=\"1\"><\/span> <span class=\"separator et-pb-icon\">E<\/span> <\/span><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>Aquaculture Filtration Technology Backed by 20+ Years of RAS EngineeringA recirculating aquaculture system is only as reliable as its filtration. Every component in the water treatment loop \u2014 solids removal, biofiltration, gas exchange, disinfection \u2014 has to perform consistently under heavy organic loads, day after day. When filtration falls short, water quality deteriorates, fish become stressed, and production suffers. AST has spent over two decades engineering aquaculture filter systems for RAS operations around the world. Our bead filter technology combines mechanical and biological filtration in a single vessel, giving you a simpler, more reliable water treatment loop with fewer components to manage and fewer points of failure.Large aquaculture facility utilizing multiple Propeller Bead Filters.How Filtration Works in a Recirculating Aquaculture System A recirculating aquaculture system continuously treats and reuses water rather than relying on a constant supply of fresh inflow. That makes the filtration system the most critical infrastructure in the facility \u2014 it&#8217;s what allows you to maintain safe ammonia, nitrite, and dissolved oxygen levels at commercial stocking densities. In a typical RAS, water leaving the culture tanks passes through a series of treatment stages: Solids removal captures uneaten feed, fecal matter, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":235,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"class_list":["post-237","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aquaculture Filters &amp; RAS Filtration Systems | AST<\/title>\n<meta name=\"description\" content=\"AST designs and builds aquaculture filtration systems for recirculating aquaculture operations worldwide. 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