Eshopps PSK 150 In Sump Protein Skimmer, 100-150 gal. tank. The EShopps In-Sump Protein Skimmer combines performance and easy installation. Eshopps protein skimmers are designed with simplicity in mind to satisfy the skimming needs of saltwater aquarium hobbyists. The included pump features a needle-wheel impeller that vigorously mixes air and water to create a flurry of waste-removing bubbles. The PSK protein skimmers will improve water quality and oxygen levels in saltwater aquariums. The removable collection cup allows convenient skimmer maintenance and disposal of collected waste material. The adjustment knob fine-tunes water level within the protein skimmer reaction chamber for optimal performance. Quality acrylic construction. Specifications: * Watts: 18 * Air Intake: 330 LPH * Main chamber Diameter: 5" * Height: 22" * Footprint (L x W): 12" x 6" * Recomended Tank Size: 100-150 gal.