Ellonmusk Posted January 23, 2021 Share Posted January 23, 2021 My green pond is in need of cleaning and i do not want do a water change because it is way to big and i believe I can use a uv light right? Link to comment Share on other sites More sharing options...
Colu Posted January 23, 2021 Share Posted January 23, 2021 I have UV light hooked up to my external canister filter never used one on a pond Link to comment Share on other sites More sharing options...
Squeegee79 Posted January 23, 2021 Share Posted January 23, 2021 I don't think there are any UV lights that work without a pump. You have to force the water through the tube that contains the light. Link to comment Share on other sites More sharing options...
OceanTruth Posted January 23, 2021 Share Posted January 23, 2021 I haven't researched UV lights in a long time, but there used to be a version where it was all one unit. Meaning it had a water pump attached to it, so you could just drop it into a pond and it would drive water through the UV bulb by itself. I have no idea if they still make that type though. Link to comment Share on other sites More sharing options...
gardenman Posted January 23, 2021 Share Posted January 23, 2021 There are a bunch of in-tank all-in-one units on the market. They typically come in 5 and 9 watt units. Do a search for "UV filter" or "green killing machine" and you should find them. I suspect they're of questionable quality, but they're out there. Link to comment Share on other sites More sharing options...
Ellonmusk Posted January 24, 2021 Author Share Posted January 24, 2021 Thanks guys i will try installing a pump Link to comment Share on other sites More sharing options...
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