The Danner Mag-Drive 12 is a high-performance magnetic drive pump engineered for reliability and power in demanding saltwater aquarium applications. Designed to move significant volumes of water, it can be used fully submerged or externally in-line, making it a versatile choice for sump return lines, closed-loop circulation systems, or powering large external filtration and equipment. Its robust construction ensures continuous, quiet operation, providing the consistent flow essential for a stable reef environment.

This pump delivers a maximum flow rate of 1200 gallons per hour with a formidable 15-foot maximum head or shut-off height. It maintains impressive performance under pressure, pushing 1100 GPH at 4 feet of head. Operating on a standard 115-volt circuit, it consumes 110 watts and features standard 3/4-inch threaded inlet and outlet ports for easy plumbing integration. The compact body, measuring just 6.5 inches long by 3 inches wide and 5.5 inches high, allows it to fit easily within most sump chambers or equipment cabinets without sacrificing power.

Ideal for the intermediate to advanced aquarist with a medium to large aquarium, the Mag-Drive 12 provides the high-turnover rate needed for systems ranging from 100 to 180 gallons. Its power and reliability make it an excellent workhorse for hobbyists who require a dependable return pump that can handle significant head pressure from complex plumbing. It is also a top choice for powering high-flow reactors, chillers, or creating dynamic water movement in a closed-loop setup where consistent performance is paramount.