Danner Supreme 1800 GPH Hydro-Mag recirculating water & air pump — adjustable Venturi, oil-free, continuous duty

The Danner Supreme 1800 GPH Hydro-Mag is a recirculating water and air pump with an adjustable Venturi, built for continuous inline or submersible use in hydroponic systems.

Engineered for growers who need dependable circulation and aeration, this model combines a hybrid magnetic induction motor and a vortex-style impeller to move up to 1800 gallons per hour while adding oxygen to nutrient solutions. Oil‑free construction and magnetic drive technology reduce wear and maintenance, and the pump is UL listed and backed by a five-year limited warranty.

How does this pump improve nutrient circulation and root oxygenation?

The Supreme Hydro-Mag circulates water efficiently to prevent stagnation and ensure even nutrient distribution across trays or reservoirs. The adjustable Venturi injects air into the flow so roots receive additional oxygen without a separate air pump.

• Maximum flow rate: 1800 GPH for fast turnover of reservoir water.
• Adjustable Venturi for on-demand aeration control.
• Vortex impeller promotes steady, debris-tolerant flow.
• Works inline or submerged to fit different system layouts.

What are the power, fittings, and physical specs I need to plan for?

This pump draws 145 watts at 1.55 amps and includes a 10-foot power cord for flexible placement. Plumbing connections include a 3/4" FPT inlet, a 3/4" MPT outlet, and a 1/2" barb x 3/4" NPT fitting for common tubing sizes.

• Electrical: 145 W / 1.55 A with a 10' cord for easy reach to outlets.
• Connections: 3/4" FPT inlet and 3/4" MPT outlet plus included adapter.
• Shut-off height: approx. 16.5' suitable for many flood table setups.
• Suitable for continuous duty, oil-free operation.

How do I choose the right pump size and install it in my hydroponic setup?

Select a pump that meets your system's daily water turnover needs and head height requirements. Estimate how many gallons you must circulate per day and how high the pump must lift water; the 1800 GPH model is ideal for medium to large tables or multiple reservoirs.

• Calculate required GPH by total reservoir volume and desired turnover rate.
• Confirm vertical head height to avoid overestimating effective flow.
• Install submersed for quiet operation or inline for remote placement.
• Use the Venturi on models 2–18 for added aeration where needed.

What maintenance and reliability features does this unit offer?

Magnetic drive design eliminates mechanical seals and reduces leak points, while oil‑free construction minimizes contamination risk. Routine checks include clearing debris from the impeller and verifying the Venturi and fittings remain unobstructed.

• Hybrid magnetic induction motor for long service life and efficiency.
• Oil-free, continuous duty construction lowers maintenance needs.
• UL listed safety standard and a 5-year limited warranty for peace of mind.
• Simple teardown for cleaning impeller and intake when required.

Who this pump is for: The Danner Supreme 1800 GPH Hydro-Mag suits hobbyists scaling to commercial growers who need reliable circulation, oxygenation, and low-maintenance operation. It fits vertical racks, flood tables, and multi-reservoir systems where a high-flow, adjustable-aeration pump reduces stagnation and boosts even nutrient delivery. Choose this model if you require robust flow, flexible plumbing, and the option to add aeration without extra hardware.