Danner Supreme 500 GPH Hydro-Mag recirculating water pump — adjustable venturi, submersible/inline, 10 ft cord

The Danner Supreme 500 GPH Hydro-Mag is a compact, energy-efficient recirculating water pump with an adjustable venturi for added aeration in hydroponic systems.

This utility pump blends magnetic-drive reliability with a built-in venturi to introduce air into nutrient solutions, encouraging healthier root environments. Rated for 500 gallons per hour, the unit runs continuously in either submersible or inline configurations and includes a 10-foot power cord, 1/2" FPT inlet and MPT outlet, plus a five-year limited warranty.

How does the adjustable venturi improve hydroponic circulation?

The venturi draws air into the water stream, increasing dissolved oxygen levels without adding separate aeration equipment. Better oxygenation around roots supports nutrient uptake and can reduce stagnation in reservoirs.

• Adjustable venturi setting to control aeration rate
• Integrates with existing plumbing via 1/2" fittings
• Works while pump runs inline or submerged
• Helps maintain consistent oxygen levels across the system

Is this pump suitable for inline and submersible use?

Yes — the Supreme Hydro-Mag is designed for both inline plumbing and direct submersion in reservoirs. Magnetic-drive construction and oil-free operation mean there are no shaft seals to fail, making it well suited for continuous duty.

• Oil-free, magnetic-drive motor for reliable operation
• Continuous-duty rating for 24/7 systems
• Compact footprint fits reservoirs or inline housings
• Includes 1/2" barb x 1/2" NPT fitting for plumbing flexibility

What performance and electrical specs should I expect?

This model delivers a maximum flow of 500 GPH and stops against a shutoff head around 10.5 feet when used on typical flood tables. It draws approximately 45 watts at 0.9 amps, making it an energy-conscious choice for vertical or small to medium hydroponic setups.

• Maximum flow: 500 GPH (gallons per hour)
• Power draw: 45 watts / 0.9 amps
• Shutoff height: about 10.5 feet for common setups
• 10-foot power cord for flexible placement

How do I choose the right pump size for my system?

Estimate daily water movement needs and the head height the pump must overcome. Match the pump’s GPH to the volume and number of plants you support, and allow margin for fittings and elevation loss.

• Calculate required flow based on reservoir volume and turnover frequency
• Account for plumbing losses and vertical lift (head height)
• Choose higher GPH for denser plantings or longer runs
• Use the adjustable venturi to tune aeration after installation

Who is this for: Growers and hobbyists looking for a reliable, low-maintenance pump that combines recirculation and aeration in one compact unit. The Danner Supreme 500 GPH Hydro-Mag suits home hydroponic gardens, vertical racks, small commercial setups, and anyone needing an oil-free, continuous-duty pump with simple plumbing connections and variable aeration control.