Jardin Fish Tank 4 Layer Sponge Biochemical Water Corner Filter
Simply install an airline into the unit and provide both aeration and filtration for your fish. The Fish Tankn Sponge Filter featurig a weighted plastic base that keeps the unit from floating during use, and cylinder design to eliminate dead space between the filter. Provides both mechanical and biological filtration. Easy to clean, simply rinse and squeeze sponge under cool running water. Advice: Replace the bio-sponge six month, to ensure the filtrating effect as well as the growth of the nitrifying bacteria.