Also looks like I got a case of root rot. Mildly. Water is 72F. Perhaps that's why plants been looking like poop. There are a bunch of new roots so whatever caused it is gone. I may keep the 12 gal totes so I can use the same chiller when I'm running 12 sites. 12 sites with 27 gal totes is like 200 gal. Chiller is rated 400 gal but thata with a Delta t more for aquariums. Where they cool the water to mid 70s.