MAK4 Circulation Pump MAK4 Water Circulation Pump I used to use this pump to power my ETS 800 skimmer but I found the pump underpowered for that job. Instead this pump is used on a closed circulation loop to provide additional current to the tank. The closed circulation loop takes water from the display tank and returns water to the display tank. The water never enters the sump and the increased flow will not place any more strain on the overflow chambers.

Max. Flow: 19.7 Gallons Per Minute. (75 l/min) Max. Head: 22.3 Feet. (6.8 m) Rotation Speed: 3000 RPM. Uses 55 watts at 60hz with 110 volts. Input: 3/4 inch MPT Output: 3/4 inch MPT Length: 10.7 inches (272 mm) Width: 3.5 inches (90 mm) Height: 5.3 inches (134 mm) This pump moves over 1190 gallons an hour at 4 foot of head pressure.