Pondmaster Pond-Mag Magnetic drive pumps are manufactured by Danner Manufacturing Inc, one of the nation's oldest and best-known brands of magnetic drive pond and fountain pumps. PONDMASTER POND-MAG® 1800 gph is energy efficient and comes with a 5-year limited warranty. The Danner mag pump is among our customers' favorites due to its reasonable price, brand name, and long-lasting nature. They feature a magnet impeller assembly and an epoxy-encased power unit ensuring that water never gets contaminated with harmful oils or chemicals. Pond, fountain, and watergarden magnetic drive pumps available from 190 to 3600 GPH.