I'm thinking that I need some sort of fan(s) in my build. I finished the project last weekend, and am having some foaming issues. I THINK that it is due to the temp difference inside the keezer. I have 10' of 3/16" line, serving at 8-9 psi, temp at 40F (differential of +3F). My sensor is at towards the bottom. I put a thermometer on top of one of the kegs and the lowest it got was 55F.
CCB, have you started up the keezer yet to see how your fan setup is working?