2 Pcs Blue (50 * 20 * 2) Cm Bio Sponge Filter Media Cut to Fit for Aquarium Top Filter and Pond Filter Sponge Multi Use

Provides biological and filtration and increase the solubility in aquarium and fish tank. – The size can be cut freely as you need, and can be used repeatedly after cleaning. – Strong filterability, can stable water quality and reduce fish died. – The material has great thickness,tough and durable. – Very suitable for using in freshwater and marine water. Specification: – Material: Cotton – Size50*20*2 CM – Thickness: 2 CM Package Includes: 2 Piece Bio Filter Sponge