Danner Supreme Aqua-Mag Magnetic Drive Water Pumps
Danner Manufacturing produces the Supreme Aqua-Mag line of magnetic drive water pumps designed for use in hydroponic systems, aquaculture, aquariums, and water feature applications where pump fluid contact requires non-toxic construction. Magnetic drive pumps eliminate the shaft seal found in conventional centrifugal pumps -- the impeller is driven by a magnetic coupling that transfers rotation through the pump housing without a mechanical seal, removing the primary source of leakage and contamination in fluid-contact pump applications. Aqua-Mag pumps are safe for direct use in nutrient solution, fish tanks, and potable water systems.
Model Range and GPH Output
The Danner Supreme Aqua-Mag line spans 500 GPH through 2400 GPH output, covering hydroponic system applications from small single-reservoir setups through large RDWC systems and recirculating aquaculture applications. Key models include the 500 GPH for small DWC and nutrient film systems, 700 GPH and 950 GPH for mid-range RDWC, 1200 GPH and 1800 GPH for larger multi-site systems, and 2400 GPH for commercial-scale recirculating applications. All models include adjustable flow control and are designed for continuous submersible operation.
Replacement Parts and Service Life
Danner manufactures replacement impellers and inlet housings for the Aqua-Mag line -- critical for commercial operations where pump downtime affects production. The magnetic drive design has fewer wear surfaces than conventional shaft-seal pumps, contributing to longer service intervals. Browse all water pumps or see complete hydroponic systems. Use our Pump & Irrigation Flow Rate Calculator to size your pump correctly. Fast shipping.
Danner Aqua-Mag FAQ
What is a magnetic drive pump and why is it used in hydroponics?
A magnetic drive pump uses a rotating magnetic field to drive the impeller through the pump housing without a physical shaft connection or mechanical seal. The impeller is attached to a driven magnet that rotates inside the sealed pump chamber, driven by an external rotating magnet connected to the motor. Because there is no shaft penetrating the pump housing, there is no shaft seal -- and no path for fluid to leak out or for pump lubricants to contaminate the fluid. In hydroponics, this means the pump can run directly in nutrient solution without introducing oils or seal materials that could affect plant health or solution chemistry.
How do I choose the right GPH for my hydroponic system?
Pump sizing depends on your system type, reservoir volume, and total head (vertical lift plus friction losses). For recirculating systems, a general guideline is to turn over the full reservoir volume every 1-2 hours. A 100-gallon reservoir typically needs 50-100 GPH at the delivery point, but you must account for head pressure -- subtract roughly 10-15% GPH capacity per foot of vertical lift. For NFT channels and drip systems, flow rate at the delivery nozzle determines application rate per site. Use our Pump & Irrigation Flow Rate Calculator to calculate the right pump size based on your system dimensions and flow requirements.
What replacement parts are available for Danner Aqua-Mag pumps?
Danner manufactures replacement impellers and inlet housings for the Aqua-Mag line -- the primary wear components in magnetic drive pump operation. The impeller is the rotating component that moves fluid and is the first item to show wear over time, typically manifesting as reduced flow rate and increased noise. Replacement impellers restore full pump performance at a fraction of the cost of a new pump. The inlet housing protects the pump intake and is replaceable if cracked or damaged. Replacement parts are stocked for the 1200 and 1800 GPH models; contact 888-815-9763 to confirm availability for your specific model.
