I just went down to my cellar which has a temp of 64 degrees and mumidity 35% and measured the UNDERSIDE of my Sterlite #1754 (15qt) tubs in a standard AP rack and found 114 degrees above the cable and 70 degrees cool end. I use newspaper substrate. I have my Ranco set for 90 degrees to provide me with a hotspot I previously measured above the newspaper of 88 degrees which gives me 75 degree air temp. That quite a spread!
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Sometimes I think the kid with two pet snakes has something that those of us with 50 to 200 lost a long time ago. 


