AquaDyne manufactures quality, dependable bead filters for pond environments up to 30,000 gallons and 600 pounds of fish load — all in a single vessel. These filtration systems boast one-touch operation, rinse and backwash cycles, and a full 6" tank opening for easy access to the filter and media. Each filter includes 3 self-sealing unions. The Air Assist Backwash system agitates the debris that collects in the media bed so that it can be easily backwashed to conserve water and thoroughly clean the filter media bed. Model Description PondSize FishLoad PumpSize UnionPorts HeadPressure MediaVolume Dimensions .30B 1000 Filter Up to1000gal 30lb 500gph-3000gph 1.5" 0-1psi 0.30cu ft 14" Diax 33"H .60B 2000 Filter Up to2000gal 50lb 1000gph-3200gph 1.5" 0-1psi 0.60cu ft 16" Diax 33"H 1.1B 4000 Filter Up to4000gal 85lb 1000gph-4000gph 1.5" 0-1psi 1.1cu ft 18" Diax 38"H 2.2B 8000 Filter Up to8000gal 165lb 1000gph-6000gph 1.5" 0-2psi 2.2cu ft 24" Diax 46"H 2.2BHE 8000HEFilter Up to8000gal 165lb 1000gph-6000gph 2" 0-1.5psi 2.2cu ft 24" Diax 46"H 4.4C 16,000 Filter Up to16,000gal 330lb 1000gph-6000gph 2" 0-1.5psi 4.4cu ft 36" Diax 48"H 8.8C 30,000 Filter Up to32,000gal 660lb 1000gph-8000gph 2" 0-2psi 8.8cu ft 36" Diax 48"H