DescriptionThis filter pad is well made of premium material for durable and practical use. It has the best effect on decomposing the excrement and the forage leftover. It can be used in sea water tank, fresh water tank, aqua-plant tank. And its strong filterability can stable water quality and reduce fish died.Feature- Color: Black. - Material: Cotton. - Size: Approx. 50x12x2cm. - Strong filterability. It can be used repeatedly after cleaning. - Can be cut any size as your needed by yourself. - Made of materials, creative durable and practical. - Effective to avoid residue and reduce the death rate of fish and chemical filtration and increase the oxygen solubility in aquarium and fish tank. - Suitable for sea water tank, fresh water tank, aqua-plant tank.