tricks of the trade pvc racks.....

ok here's the deal i have an pvc 4 shelf enclosed rack and my top tub can be 92/93 hot spot but that will only keep my bottom one at 87 hot spot is that ok or what kinds of things can i do if needed....thanks

another heat source?

Its too close to the floor. The bottom shelves are always colder. Maybe put some casters on the bottom. The floor will suck the heat out of anything touching it.
Or maybe cut some thick wall foam insulation and place it between the floor and the rack.

sorry let me be more specific for some...what kind of insulation tips....

Post a picture of your rack so i can help better.

i think your right about the floor i'll keep you posted...

Getting the rack elevated, even a little bit will help. I have mine sitting on a shelf from a wire rack shelving unit. No legs or anything, just the shelf. The extra inch it's off the ground really makes a difference.