Carbon Activated Biological Filters, Guaranteed to rid the green from your pond and keep fish healthy.

We can give you a million reasons why you should purchase the revolutionary Koi Quad-matic carbon filter...they're called square feet.

MODEL MAX. GALLONS SURFACE AREA SQ FT IN/OUT DIRECT DRIVE PUMPS ONLY SIZE PRICE QTY
QM 240 4,000 TO 8,000 GAL. 116 MILLION 2" 3000 - 4800 GPH 21"W x 37"H $2,065
QM 320 8,000 TO 14,000 GAL. 145 MILLION 2" 3600 - 4800 GPH 21"W x 43"H $2,512
QM 420 14,000 TO 20,000 GAL 188 MILLION 2" 4800 - 7800 GPH 21"W x 49"H $ 3,082
QM 520 20,000 TO 30,000 GAL 232 MILLION 2" 7800 - 9600 GPH 21"W x 56"H $ 3,378