Automatic Pneumatic Backwash in a Small Footprint

The AST Endurance™ Filter is an advancement of our patented PolyGeyser® technology with the addition of many new enhancements and increased performance features.

Features Include:

  • Automatic pneumatic backwash enabling the filter to operate for extended periods of time without intervention, saving time and labor
  • Lowest water loss filter in the industry, less than 5% of traditional filters
  • Large sludge storage chamber that concentrates the sludge minimizing servicing needs
  • Superior solids removal and biofiltration in one filter, delivering crystal clear water
  • Low profile design allows for “airlift” water pumping, minimizing energy costs
  • Elegant, simple design with no moving internal parts and no replacement media ever required, guaranteeing trouble free operation
  • Units arrive pre-filled with bead media which never needs replaced

Optional Add-Ons:

  • Optional automatic sludge discharge making the filter virtually maintenance free
  • Optional UV light add-on to assure algae control even under warm water conditions

Your Pond Workhorse

AST Endurance filters are ideal for ponds or tanks 200 to 4000 gallons in size and are designed for use in KOI, Aquaponic, Fingerling and small Growout applications. The tables below shows the approximate sizes of ponds, tanks and aquaponic systems the Endurance models will support.

Aquaponics Applications

Video Resources


AST Endurance Filter: Revolutionary Automatic PolyGeyser Backwash


AST Endurance Filter: Water Pumped Configuration, PolyGeyser Technology


AST Endurance Filter: Gravity Fed, Airlifted System- No water pumps required! PolyGeyser Backwash


AST Endurance Filter: Auto-Purge Sludge with Air! Cleaner water through PolyGeyser Technology

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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!

Endurance Operation: Standard Configuration

These exceptional filters backwash automatically, several times a day. The user does not need to turn off the pump or close any valves during the backwash sequence. The filter does not require an electric timer. The backwash cycle is regulated by the air that is injected into the charge chamber. The filters clean and recycle the dirty water produced in backwashing every two to three hours. Sludge is only removed once or twice a week.


AST Endurance 2000: Setting the Auto-Backwash Timing for Easy hands-free Backwash


Endurance Filter: When NOT to drain the sludge or How to avoid Bead Loss in Your Endurance filter

Let's Get Started Today

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!