I run a 36W UV on my 300G total setup... I run it 3 hours on and 3 hours off, alternating.
I have found my water clear, have lots of LR in both the Refuge and the DT, so I have never had a problem with pods. But again I don't hook the UV to the return pump, I have it in my sump area with a small pump hooked to it both on timers... This way when on, anything going back through the return pump doesn't get zapped, like pods.
I have no regrets. Fish are healthy, coral is colorful