Three Propeller Bead Filters for a large pond accommodating elephants and large mammals at the San Diego Zoo.
San Diego Zoo Elephant Exhibit
Aquariums and Zoos, Propeller Bead Filter![](https://astfilters.com/aquatic-systems/wp-content/uploads/sites/3/2015/12/san-diego-zoo-elephant-exhibit-bead-water-filters.jpg)
Three Propeller Bead Filters for a large pond accommodating elephants and large mammals at the San Diego Zoo.