Flow Rate800gph (3000L/h), Suitable for fish tank: 60 ~ 80CM. Rated power: 4W Propeller Design The hull’s spiral power output, strong and surging, large flow, turbulence, 360° rotating wave, no dead angle in the fish tank. High-Quality Movement Stainless steel shaft core, universal for fresh water, wear-resistant and break-proof. two-sided rubber pads are processed to make it more silent. the special ceramic ring at the bottom prevents motor friction, prolongs the service life,and plays a more silent and power-saving role. 360° Adjustable The wave-forming head can be rotated 360°, and the direction of the wave can be adjusted freely, so that the water flow is smoother and the waves can be generated without dead angles. Use Attention Please take a break every 4 to 8 hours, clean and clean the rotor once a month,work completely submerged under water only, so as not to burn the pump due to high temperature.the surrounding water temperature must be below 35 degrees celsius or 95 degrees