This is a Fish Tank Protein Skimmer, manufactured with high-grade and sturdy acrylic material, safe and practical, and it . And the Protein Skimmer can purify the water body, those invisible harmful substances and protein in the fish tank, and give the fish living space. Features -Color:Grey -Material:Acrylic -Size:22.50X10.00X8.00cm/8.84X3.93X3.14in - Removes excess protein, organic wastes, and other particulates to lower levels and other undesirable substances. - Skimmer is the best form of mechanical filtration for you to make your fish tank clean. - This Protein Skimmer has the effect of adjusting the balance of the fish tank, and can stabilize the water , thereby ensuring the normal operation of the - This convenient protein skimmer is suitable for fish tank and aquarium, perfect for home or store use. - It is simple , but very practical in use, which brings great convenience to you. Package list: 1 x Protein Skimmer