Are uv sterilizers needed in a fw tank

Not needed, but it brings a great piece of mind when using it.


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I always keep a uv on all my tanks now cuz you never know what parasite or bacteria a new fish might bring in the tank. QTing would help prevent that from happening but it's better to be safe than sorry


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They also kill bacteria and airborne stuff. Do your research before you get one. There are a lot of them out there that aren't with the time of day. Also the ones built in to cannister filters are a sales gimmick. Ask opinions in the stingray section. They seem to have the most experience.

I used one in a planted tank, that was driving me crazy, to help control algae tell I got it settled down and running right. It was an in tank model and I doubt if it was very efficient for long term tank protection. It was nearly impossible to take apart and check and clean the inside. But it did what I needed for a short term problem.

rodger said:

They also kill bacteria and airborne stuff. Do your research before you get one. There are a lot of them out there that aren't with the time of day. Also the ones built in to cannister filters are a sales gimmick. Ask opinions in the stingray section. They seem to have the most experience.

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Actually I have 1 that's built in the canister, reaction 4, and it works phenomenallyy. At 1 point I was getting sick fish for free and would add them to the system, not smart I know, but within a week theyd be 100% again. No salt or meds added.


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