I have 2 14.5 gallon stout tanks fermentors. I have two 90w Peltier cooling chips on one fermentor and four 90w Peltier cooling chips on the other using Stout's aluminum cooling blocks.
I can get to 4 chip FV down to 50F in a 70F room (used it at that temp for a Kolsch). I've only used the 2...