Nubios Nitrate Reducing Media Pads will maintain safe nitrate levels in your aquarium or pond water, helping to increase the lifespan of your fish. They can be used in fresh or saltwater aquariums or ponds. Cut to fit any aquarium or pond filtration unit including hang-on filters, canister filters, top filters, internal filters, wet/dry filters, and more. Measures 10 x 18 (25cm x 45
