Danner Manufacturing, Inc., Pondmaster 500 GPH Pump, 02525

This pump is strong and quiet. It is head and shoulders better than so many of the cheap consumer submersible pond pumps out there. We went through 3 of the cheaper pumps in a year. Maintenance is infrequent and easy. About once a month, I just pull this up out of the pond, run some hot water through it in both directions, and all the collected gunk just cleans right out of it. Even after 30 days between cleanings, the output flow is only slightly diminished. With the cheaper pumps we've used, in a pond full of messy goldfish, the flow would drop way off after only 4-5 days of running. An important plus is that this comes with a large vaned basket that will keep fish from getting within 3-4 inches of the intake opening, so they can't be pulled in by this pump's rather strong suction.

It does what it states. Powerful for the stats given. Easy to install.

My other one lasted 12 years, hopefully this one will last also.

Installed in my 300 gallon pond, running to a Vevor UV pond filter. It hasn't been turned off since I installed it, no issues. Much higher quality than my last solar pump. Seems very heavy duty for the application, flows water well, quiet. I have cleaned it once, but it didn't have much build-up.

Danner/Pondmaster make the best magnetic drive pumps - period. I want to say something more than "it just works" - Which really doesn't say much. This I can say from both an experiential and engineering viewpoint. I have over 45 years experience with aquariums, 10 years experience with a medium (>3000g) outdoor pond, and many outdoor water features. I have used Pondmaster and Danner mag-drive pumps for these applications, along with a few regrettable choices. As far as from a construction standpoint, these are a well made pond 'feature' pump or statuary/waterfall pump expected to run 24x7x365. To say I have 'abused' these pumps is an understatement: I have run one or more of these dry, in freezing ponds and fountains (although with pond warmers), and salt-water aquariums - No problems. Even with this type of treatment these pumps have ran for an average of 2.5 years without problems. Initially these pumps had problems with wear in the cover/stem area - this has been redesigned and reinforced for longer life. I recently replaced a Danner 500gph pump in my backyard fountain, which was retired from pond duty after 3 years, sat on a shelf for a year, and ran another two years. The cause of the failure? ....a broken shaft. A bonus is that these are extremely easy to rebuild. I will rebuild this pump with another impeller assembly and cover, and I will have a reliable spare for when or whatever. HIGHLY RECOMMENDED Update 24 July 2018: Already rebuilt, tested, and re-boxed. :-)

Good pump first one lasted 4 years of yearly run

Good product

Arrived quickly, good price, works great 👍

Exactly as described and does a great job

if i was using pump submerged i wouldn't have noticed but i'm using it inline and it leaks from what i discovered was a crack in the impeller housing.