Cheaper Tetra Bio-Active Pressure BP4000 Filter

Put the finishing touches on your perfect pond with the Tetra Pond Bio-Active Pressure Filter! This easy-to-use filter uses mechanical and biological filtration to maintain clear and healthy pond water. In fact, unique open-profile bio-activators clean with maximum efficiency, and after each cycle, the filtered water is returned by waterfall or stream. And when it’s time to clean the filter, just remove the backflush cap. Thanks to these efficient processes, this filter works for ponds up to 4,000 gallons.