Since my very unpleasant experience with Ich a couple of months ago, I am thinking of adding a UV sterilizer to my tank. There are some small hang on back models that seem like they would do what I want. I am unsure about how to use them. Do they have to be hooked up to a filter or do they work independently? Some that I have looked at are called in line units and some are not. Also, one of the reviews mentioned hooking it up to a canister filter. Is that really necessary, or will the unit function on its own?
Thanks for your help.
Thanks for your help.