Pond Pump Submersible (800GPH) Adjustable Flow Inline Aquarium Fountain Liquid Koi Fish Salt Fresh Fluid Filter with Set of Outlet Adapter

Adjustable flow rate; Safe for fish, with no oil, Alloy or harmful chemicals Allow large size of dirt particle up to 1/4" with spiral propeller design Well designed with variable frequency technology for a variety of settings: small power, large flow, high H-max, silence