Originally Posted by mindelina13
The title pretty much says it all. IM new to salt water tanks and would like to no if uv's kill ich? If not what do they kill? Hope this isnt a stupid question?
Never be afraid to post. The only stupid question is the one that isn't asked! A UV sterilizer catches the ich in the "free floating stage" Unfortunately this is only about 10-20 seconds out of their life cycle. They host, drop off (quick drop as they are full at this point) then reproduce. The babies are eager for a host. You may catch some on the way up, but a UV sterilizer shoots across one point in the tank. The fish swim everywhere. The fish are re-infected before they even get to the UV line.