Danner® Pondmaster® Pond-Mag® Magnetic-Drive Water Pump - 250 GPH

Continuous-Duty Epoxy-Filled Magnetic-Drive Pond Pump, 250 GPH

The Danner® Pondmaster® Pond-Mag® is a continuous-duty magnetic-drive pump for ponds, garden fountains, and water features. Filled with epoxy instead of oil, it cannot leak oil into pond water if a seal ever fails, and with no shaft seals to wear out it is built for years of reliable, quiet service at 250 GPH.

A magnetic impeller assembly with a heavy-duty copper winding keeps the motor efficient, while standard NPT threads and an ABS case with corrosion-proof fasteners keep the pump ready for freshwater pond, fountain, and piped-statuary plumbing.

Key Features & Benefits

• Continuous-duty magnetic drive — no seals to fail; runs steadily without interruption.
• Epoxy-filled, not oil-filled — cannot leak oil into pond water, keeping it safe for fish and plants.
• 250 GPH flow rate — sized for ponds, garden fountains, and piped statuary applications.
• Adjustable flow control on most models — dial back output to match the application (the PM250 is the one Pond-Mag® size without this feature).
• ABS case, corrosion-proof fasteners, and standard NPT threads — durable, leak-free construction for long-term outdoor use.

Who Should Use This

Pond keepers, water-garden enthusiasts, and growers who need a reliable, continuous-duty pump for ponds, garden fountains, and piped statuary are the direct fit for the Pond-Mag® series.

About Danner

Danner Manufacturing has operated for more than 90 years, tracing back to a 1934 start in a Brooklyn cellar before the company's 1974 move to its current Islandia, New York headquarters. Pond-Mag® pumps are part of the Pondmaster® brand Danner markets specifically for pond and water-garden applications.

Frequently Asked Questions

How is epoxy-fill better than oil-fill?

Oil-filled pump motors can leak oil into pond water if a seal fails, which is harmful to fish and plants. Epoxy-fill removes that risk entirely by replacing the oil reservoir with solid epoxy potting.

Does this model have adjustable flow control?

No — the Pond-Mag® 250 (PM250) does not include built-in adjustable flow control, unlike the rest of the Pond-Mag® lineup. Sizing up to the next model restores that feature if adjustable output matters for your setup.

Can this pump run continuously?

Yes — the Pond-Mag® is built specifically for continuous-duty operation without overheating or wearing out prematurely. It is designed to stay submerged and running around the clock in a pond or water feature.

What type of fittings does it use?

Standard NPT (National Pipe Thread) fittings, compatible with most pond and irrigation plumbing hardware. That standardization makes it straightforward to connect this pump to existing pond plumbing without extra adapters.