The Cobalt Neo-Flow 10,000 adjustable DC prop pump creates huge flow up to 2,640 gph not possible with normal power heads creating vital current and eliminating dead spots. Adjustable DC power supply, allows flow rates from 50-100% up to 2,640 gph (10,000l/h). Powerful magnet mount attaches on to tanks up to 3/4" (20MM) thick. Easy placement and the wide angle omni- directional mount that allows positioning in a complete have sphere makes this an ideal circulator for any aquarium! 3-Year Warranty.