Pondmaster Pond-Mag Magnetic drive pumps are manufactured by Danner Manufacturing Inc, one of the nations oldest and best known brands of magnetic drive pond and fountain pumps. PONDMASTER POND-MAG® 250 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.