Marina i110/i160 Internal Filter Cartridge (2pk) BULK BUY 5pk The Marina i110 /i160 Replacement Power Cartridge is made specifically to fit inside the Marina i110 and i160 internal filters.The outside of the power cartridge features polyester foam to...

Marina i25 Internal Filter Refill Cartridge (2pk) BULK BUY 5pk The Marina i25 Replacement Power Cartridge is made specifically to fit inside the Marina i25 internal filter. The outside of the power cartridge features polyester foam to trap fine...

Marina Slim Power Filter Bio-Clear Cartridge (3pk) BULK BUY 5pk Marina Slim Filter Bio-Clear is a genuine replacement cartridge for all three Marina Slim Filter Models (S10, S15, S20).  Ideal for goldfish, the filter cartridge contains zeolite and...

Marina Slim Power Filter Bio-Carb Cartridge (3pk) BULK BUY 5pk Marina Slim Filter Bio-Carb is a genuine replacement cartridge for all three Marina Slim Filter Models (S10, S15, S20).  Ideal for tropical fish, the filter cartridge contains activated...