Biological Sponge 1 Square Meter

This product can be used for sea water tank, fresh water tank, and water weeds tank with the sizes being cut as your wish.
The filter cotton has the best effect on decomposing the excrement and the forage leftover, and improving the filtering and cleaning of water, it can reduce the death rate of fish.
Being cleaned with water once per month, without blocking and deforming, it can be used again after cleaning and can be repeated for use.

Dimensions: 1 meter length, 1 meter width, 1 inch height