Submersible only powerhead kit for Marineland. Certified 170 g.p.h. flow for consistently high performance. Reusable sponge filter efficiently reduces the high waste loads of turtle and amphibian tanks. Flow diffuser adjusts for maximum surface agitation, increasing oxygenation and circulation. Can also be used in creating a spectacular waterfall. (Tubing not included.) Includes an undergravel reverse flow elbow and bracket and suction cup mounts. Replacement sponge also available.