* Helps improve oxygen exchange while skimming surface proteins
* Flow control valve controls skimming rate
* 360° intake float skims from all directions

Skims dissolved proteins to curb nutrient buildup and maintain good water quality. Improves oxygen exchange and light penetration by removing surface film. Easily attaches to your canister filter's intake. Includes suction cup mounts, flow control valve, 360° intake float, and 5/8" flexible hose. 4-1/2" x 11-1/2"; 5/8" hose diameter.