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

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.

This is a replacement for the same model that has been running continuously for almost twenty years. The old one had not failed, but was partially clogged. I thought I might need a new one before taking the old one apart. I noticed very few in line pumps being sold. When I found this on Amazon, I decided to buy a new one because of this and have the old one for backup. This pump can be used in line and submerged. I went through three other brands that failed before buying this.

Arrived quickly, good price, works great 👍

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.

The year was 2014. The project was to restore an unkept pond at the new house. I had the time but not a lot of money. I had to redo everything with the pond stone, by stone, new liner, and of course a new pump. I did a bit of research and decided to go with this one. This pond also ended up becoming the sump tank for my aquaponics system. At first, I used 2 separate pumps, one for the waterfall and the other for the system. After the smaller, cheaper pump failed, I redid the piping to just use this pump for both. I have had a few half-dry runs when the pump has drained the pond due to an issue with the piping, ( poor fish, didn't know what was going on). The pond and system have frozen a few times. But the pump has never let up or failed. SO 8 years later and the pump is still moving plenty of water throughout the pond.

Pump is awesome. I have used danner pumps with my salt water aquariums and am currently using the latest pump for my aquaponic system. The pump is quiet and energy efficient

I use this pump on my boat to provide cooling water to the condenser on my air conditioner. A traditional marine pump with equal flow/head would be about $200. Considering this pump only needs to run 100 hours per year, I figured it should last forever. So far (one hot summer) it still works great. I do not run this submerged. I use hose fittings on the suction and discharge. The only concern is plastic construction as opposed to reinforced fiberglass or metal. For pond use...no problem. For boat use, I never leave the boat unattended with this pump running and the seacock (intake valve) open.

Good water flow.

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.