I have purchased 3 of these, I accidentally dropped one and broke the top piece, the rest have been used on 50+ brew days without failure.

so far so good, i have purchased similar pumps that didn't last very long, these seem to be of better quality workmanship and are doing a great job

Two issues with this pump first is that but is quite loud and second is that it runs a bit warm. Other than those two issues the pump works fine I use it as a booster pump from a canister filter to a co2 reactor. Aquarium use I mean.

Update 1-22-18: the second pump has survived 40 hrs run time circulating water up to 125f. It's gotten slightly louder but is still running smoothly. If it fails I'll replace it with a similarly priced US Solar pump that employs ceramic bushings.

Update 12-25-17: it's possible my installation caused this failure. The nylon bushings are worn oblong which could have been caused by drawing water through this pump while its unpowered by a downstream diaphragm pump, from the same vendor, which generates significant pressure pulses. I've restored my 4star rating until the third pump (identical replacement) I bought either fails or doesn't now that I've rigged a separate draw for the diaphragm pump.

Update 12-22-17: a second pump I used to circulate water through a heat exchanger has worn out after less than 30 hours run time. This caused a loud vibration inside the pump. Water temp was 50degf to 125degf with zero head.

The plastic impeller rides on a metal shaft without any bushings so they just wear out quickly. I've replaced it with another one exactly the same and will update in a month or so if it wears out as well. I expect it will. It would probably be fine if only used intermittently.

Original 5 star comments:
I used this for an off grid shower. Mounted a 3gal solar shower bag above it with an air hose quick coupler to allow the bag to be removed and refilled. The pump must be immersed so mounting it below the level of the bag lets water flow through the pump and partway up the discharge hose. That primes the pump.

The 10mm fittings will take 3/8" hose. Reduction fittings step down to the pump and then down to 1/4" hose up to the shower head from the bag.

Splice in a linemaster foot switch and voila, nice 12v shower system.

Originally tasked to be used as a camping shower but had lackluster performance and pressure. A custom created PVC shower head changed the performance dramatically for the better but we had already used a different pump. This one now serves quite well in the pond as both a water feature pump and an aerator/circulation setup. The induction drive impeller makes clean out a breeze when something gets past the screen/mesh on the intake side. Running on a solar recharged 12 volt 5 amp battery with a light sensor that turns off the whole rig at night.