ITEM NAME:Aquarium Fish Tank White Economic Foam Sponge Pad Biochemical Filter Pump M&O Description: Provides biological and chemical filtration and increase the oxygen solubility in aquarium and fish tank. It can be cut as your need, promotes nitrogen cycle, helps reduce the death rate of fish. Material : Sponge Color : White Dimension : 100 x 13.5 x 3cm / 39.4"" x 5.3"" x 1.2"" (L*W*H) Package Content : 1 x Biochemical Filter Sponge.Provides biological and chemical filtration and increase the oxygen solubility in aquarium and fish tank. Material : Sponge.