One used (for two years and two months) Reef Octopus VarioS-6 Controllable DC Circulation Pump. I used it as a return pump for my Redsea 525XL tank. Comes with original package which includes controller, float switch, power supply, protective intake screen and connection fittings.

Max Flow: 1720gph*
Max Height: 16ft*
Power Consumption: 70W at max power
Voltage: DC 24V
Dimensions: 3.75″W x 5.7″L x 5.5″H
Output thread size: 32mm/1 1/4″ (barb / PVC coupling)
Inlet union size: 1.25″ male union thread