Uv?

[chase33]

I have a 125g reef tank with 40g sump. the sump has three compartiments. The skimmer is in the first, the return pump is in the second and a Regugium is in the third section. The return is teed off to allow some flow into the Fuge with then overflows into the return area. My questions are:

- Where would I place a UV sterilizer in this setup?
- How do UV's connect into the system?
- Do they require any other equipment such as a cannister or anything like that?

- Lastly, what size unit would I need for my tank?

[Scottkelly911]

This is where it gets tricky with UV, in my opinion this is why a lot of people don't run UV all day everyday. If you put it inline with the overflow, then it may kill beneficial bacteria that will feed the fuge, if you put it in the return, then it may kill some of the pods that are supposed to go through the return and make their way into the main system. If you put it in with the Skimmer, well, I guess that's a valid place to put it but then again, you're back in the pickle of does the skimmer go before the fuge. I'll be watching this one closely as I'm in the middle of setting up my sump.