I ran my UC sterile for years with great results. Then I ran tea and never looked back... I did do 2 side by sides before a full switch to the liveside and the results spoke for themselves, both times, in taste, looks, yield and less stress by watching how beautiful everything stayed. I keep my H2O at 68 except when I first enter the UC. Knowing my system and plants I start in the UC at 70, even 72, for the first 10 days to 2 weeks, depending on roots. My chillers don't run much at that time. As my girls take to the system and my roots start to swim I adjust my water for the first time.. It's NOT that "most" don't run live, it's more like the few people rocking UC's on forums don't run them. Most on forums play by CC recomendation. CC promotes sterile, which works great. They also sell UC Roots and nutes they test with their products... In the end I found the UC to work every time with ANY quality nute line, sterile or live or vertical or horizontal lighting, as long as we stick to one basic rules of thumb.. KISS... Then as we learn our strain and dial the rooms environment we can play a little more with additives and whatnot. I feel adding too much in the stew causes more issues than live or sterile or this line or that line.. just stick to something and get to know it and your rock your system... Just my 2 cents..