Provides biological and chemical filtration and increase the oxygen solubility in aquarium and fish tank;It can be cut as your need, promote nitrogen cycle helps reduce the death rate of fish.
Type: 2 layer design
Each layer size (approx ):
32 x 12 x 2cm/12. 6″ x 4. 7″ x 0. 7″ (L * W * T )
Color: Blue
Weight: 46g
