I ended up doing the Lifegard Aquatics Pro-MAX 3″ Amalgam High Output 55W UV Sterilizer. I can hit the 350 gph target for 180,000 µW/cm2 UVC on with my COR20 Running at about 20%. I normally am running it at about 40% @ 850 gph.Tank is looking sweet! I’m setting up a 150 INT at the moment, waiting on some help to get the beast into the house... What UV did you end up running and what size? Will definitely be following along for your build!