How long?

how long Should I run my uv ?

 

I believe most run them 24 /7

Steve

 

yep...mine is on all the time. I would not turn it off.

 

I won't use UV in a reef system, they inactivate or kill off an important part of the food chain necessary to sustain a system long term.

Now in my fish only systems I swear by them, I am certain a UV helped many of my fish live past 13 years old in a heavily stocked community swim tank which went through all sorts or troubles over the years.

 

i have seen very sucessful reef system running them 24/7

 

Never run one so I don't know. Why do you want to run one?? I welcome little creatures in my water column. Acros gotta eat something

 

I agree FO UV is OK but fullblown reef not productive but as kedron mentioned yea ive seen well run reefs with then too, just wouldnt do it myself

 

24/7. As some people stated it might be counter productive in a reef system. If you can adjust the flow on it try running a higher flow. This will leave most animals in the water column but help with some bacterial and algae problems.