UV usage?


Lifetime Charter Member
Lifetime Member
Jan 15, 2009
Given some of my recent woes and an article I was reading from D. Walstad I'm giving consideration to at least occasional UV usage.


If I were to use a UV sterilizer with my wet/dry, where would I plumb this in? Presumably on the return side? I don't see how that would allow any UV to get the bacteria in question though as the film would likely just build up in the sump on the wet/dry away from the sterilizer. I'm not even sure what's hitting my cardinals would be touched by this but I was thinking maybe using the UV periodically, or at least for a week or two when new fish get added to the tank as a way to try and level the playing field as it were.




Lifetime Charter Member
Lifetime Member
Jun 21, 2009
Surprise, AZ
To UV Or Not To UV, That Is... Well, Up To You

Hi S,

While I seriously doubt your situation with the Cardinal Tetra’s is anything a UV-sterilizer would have prevented or helped eradicate. I am a fan of UV, especially with big messy carnivores.

I think 4-6 hours every day or every other day, especially after water changes of a properly sized UV-sterilizer, giving you enough “dwell” time is great.

I run mine on separate loops.

Obviously different situation different benefits, I think this is one of those things that is for the critters.