Sponge Black

Provides biological and chemical filtration and increase the oxygen solubility in aquarium . Dense shape makes it effective to avoid and reduce the death rate of fish. The cotton has good effect on decomposing the excrement and the food , improving the filtering and cleaning of water. Clean and reuse: Our filter sponge can be rinsed clean in a sink. Changing filter sponge regularly will increase water quality by removing solid organic compounds before they continue to break down and add additional nutrients (which can increase growth) to the water in your fish tank. Cut to fit: Can easily be cut to any size needed. If sponge is used together with air pump, it can get double effects of adding oxygen and filteration, enhance the viability of fish. Feature:Remove harmful free-floating waste and debris Improve water quality Effectively remove all organic particles, foreign debris and excess food.