UV Pond Water Clarifier for 20-300 Gallon, UV Sterilizer for Swimming Pool, Spa, Large Fish Tank, Cold Plunge, 12MM/16MM/20MM/Pipe Diameter Available Ultraviolet Clarifier for Green Water

Works as described.

In two weeks my pond went from not being able to see my fish to crystal clear with no chemicals!!Well it cleared my water but quit working yesterday ! A lot of money for something to only work two weeks ! I would not recommend buying one !

I have used many types of uv sterallization over the years in fresh and salt water. I was worried that the product did not have a way to tell if the bulb was still working but they cleverly use translucent hose fitting, and you can see the light coming from the in and out ports. Not seeing uv directly, the translucent plastic blocks out uv but passes a cyan light in the visible spectrum that is essentially a waste product when the bulb is in use.

When I received it, I was impressed with the weight and heft of the light. Fitting screw on tight and satisfying. No leaks, easy to clamp hoses on the included barbs.

I would like to give you 3 starts great materials ( body stainless steel) but connections to hose plastic very cheep easy to brake there are leaking need use white tape

I had a fluval uv on my tank and it stopped working after one year. The bulb is not replaceable where this one is.

Went together fine. Mounted on a board. Light is supposed to last for "8000 hours" or something. Using it in a cold plunge. The small stainless 6w unit. Just cleaned it last week. Took the bulb out of the housing and it is maybe 1/2 lit now with blackish marks internally. Now I cannot see how or where to order a new bulb. So now what? Redo it with another? Nope.

First off, ditch the garbage fittings it comes with and use real fittings, not worth the leak! Other than that, love it! Unit is powerful & compact. Status light on power supply is nice. The stainless steel construction is great! My old unit was plastic and leaking. Hopefully this will survive.