Active Aqua Submersible Water Pump, 40 GPH

Reliable Circulation for 5-Gallon Reservoirs

A reservoir only stays healthy if the solution inside it keeps moving — a pump that's underpowered, leaky, or noisy turns a simple circulation task into a daily annoyance.

The Active Aqua Submersible Water Pump moves 40 gallons per hour at 9.5 watts, sized to keep a roughly 5-gallon reservoir circulating evenly without straining the motor or running up your power bill.

Its mag-drive design and steel shaft suited to freshwater nutrient solutions mean it runs quietly below the waterline for the long haul, while the removable foam filter and rubber feet keep debris out and vibration down.

Key Features & Benefits

• 40 GPH output — matches 5-gallon reservoirs, giving the system enough flow to keep nutrient solution circulating on schedule.
• 9.5W mag-drive motor — runs efficiently below the waterline without the oil or seals that ordinary pumps depend on.
• Steel shaft suited to freshwater nutrient solutions — is built for the demands of this flow range and rated for indoor use.
• Removable foam filter and rubber feet — keep debris out of the impeller and cut down on vibration and noise during long runs.
• 6-foot heavy-duty power cord — gives you the reach to place the pump exactly where the reservoir sits without an extension cord.
• Multiple hose fitting sizes included — so the pump connects to your existing tubing without a trip back to the store for adapters.
• 5/16" tubing fitting included — fits 5/16" ID tubing directly, and also accepts 1/4" ID tubing inside the same fitting for flexible setups.

Who Should Use the 40 GPH Submersible Pump

This pump suits hydroponic growers running roughly 5-gallon reservoirs who want dependable, quiet circulation, as well as anyone setting up aquariums, ponds, fountains, or other water features that call for a similarly sized submersible pump.

Matching Pump Output to Your Reservoir

Pumps in the Active Aqua submersible line range from compact 40 GPH units to large 1,100 GPH models, each sized to a particular reservoir range — this 40 GPH pump is matched to roughly 5-gallon setups. Going too small leaves solution stagnant in corners of the reservoir; going too large wastes power and can over-agitate delicate root systems, so matching GPH to reservoir size keeps the whole system running smoothly.

Frequently Asked Questions

What size reservoir is this pump suited for?

At 40 GPH, it's sized for reservoirs around 5 gallons, giving the solution enough turnover to stay evenly mixed and oxygenated.

Is this pump safe for saltwater or aquaponic setups?

It uses a steel shaft, so it's built for freshwater hydroponic and aquaponic use rather than saltwater applications — larger models in the line (250 GPH and up) use a ceramic shaft rated for saltwater.

How is the pump installed and positioned?

It runs fully submerged below the waterline, secured by rubber mounting feet that reduce vibration, and connects through multiple included hose fittings for an exact tubing match.

How long is the power cord?

It ships with a 6-foot heavy-duty power cord, giving you the reach to route power to an outlet without crowding the reservoir setup.

How do I keep the pump running smoothly over time?

Rinse the removable foam filter regularly to keep debris away from the impeller, and keep an Active Aqua replacement impeller on hand so a worn part never stalls your circulation.