Lex said<<<Also, without Diafine I'd have had a difficult time doing any film processing at times this summer when the coolest my darkroom ever got was around 85F.>>>

I know about that. I use a lot of ice in the summer. I tray develop everything for my personal work and if I shoot 120 I tank develop that. I find it much easier to bring the chems to 75f and adjust the time to correspond with the higher temp.