Aquadyne Model AD2000 Filter Perfectly suited for koi ponds up to 1800 gallons. Supports up to 45 pounds of fish. .6 Cubic feet of bead media. Diameter 16"�, height 33"�, maximum pressure 50 psi. Average water to backwash 25 gallons. Average flow through filter 1000-2200 gph. Mi

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