Rack heat issue: Cool side too cool

Measuring air temps on the cool side, and surface temp on the warm. Warm side is ranging in the 91-93 range pretty consistently.

In the last 2 hours I've made a few changes. I shortened the length of the warm side probe wires from 10 feet to about 3 (unsoldered the wires, cut them, re-soldered them. Still works perfectly...). I re-arranged my animals so that the level 2 tub (second from top) is empty, and melted a hole large enough to pass my thermostat probe through. I measured and marked all tubs for the full width of the heat tape, and placed the thermostat probe in the center of one of those, and the thermometer probes in the center of the marks on the top and bottom shelves. The shelf the thermostat probe is on doesn't have an animal in it, so it won't need to be moved for at least a few weeks. I figure that way I'll get a more accurate, stable warm side, at least. Hopefully that'll help bring up my cool side also, but we'll see...

you could add some flex to the front but that might be a little hard the way the rack is put together. other then that heating the room is the best option. most people that use racks have them in a controlled room.

the plexiglas door might work with some holes in it. i don't know how you would attach the hinges.

also look into some reflectix. its a insulator found at most hardware stores. its like tin foiled bubble wrap. it holds heat in very very well. you could use that on the sides and back.

maybe give Rich an email/call and see what he says...

Ok, so here's what's going on now that I've got some ventilation going on, and proper, stable humidity...

I decided to raise my warm side temp to 93-94 in an attempt to raise the cool side temp as well. This has very little, if any effect. My cool side temps are running around 79-80 during the day, and dropping to as low as 76.5-ish at night. Do you guys think that these temps are acceptable, or should I continue looking for other options?