Biochemical filter can be used directly in water or use with filter. This filter sponge improves the filtering and cleaning of water, reducing the death rate of fish. You can cut the filter sponge easily for filter replacement.
Provide biochemical and chemical filtration
Increase the oxygen solubility in aquarium or fish tank
Promote nitrogen cycle, can be cut as you need
Size (L x W x T): Approx. 12.5 x 4.7 x 0.7 inch
1x Biochemical Filter