Eco Tech Marine VorTech QuietDrive Propeller Pumps

No distractions from the beauty of the tank and its inhabitants No wires in the aquarium No unwanted heat added to the water column No risk of electrical discharge harming people or marine life No hassle when it comes to installing, relocating or cleaning the power head MP10mQD Flow: 2,500 gph (9,500 lph) Power Consumption: 8-19 Watts Tank Range: 2.5-50+ gal (9.5-190 liters) Max Glass Thickness: 0.375 inches (9.5 mm)   MP40mQD Flow: 5,000 gph (19,000 lph) Power Consumption: 9-37 Watts Tank Range: 50-500+ gal (190-1,800 liters) Max Glass Thickness: 0.75 inches (19 mm)