So I ended up not being so happy with my first attempt. Most of the poles were too short and were sitting on top of screws rather than being secured by screws. I also couldn't get the ambient temp over 70, and the tubs rubbed against the screws holding down the hardboard that I cut too large corners out of. It was kind of a mess. So I took it apart, found a used matching rack on Craigslist for 20 bucks, bought another piece of hardboard and some eucaboard for sides and a back, and then I tried again.



This is the result. I'm much happier with it. It's sturdier and can keep the ambient temps higher much easier. I bought screws that lay flush so they won't rub the tubs, and triple checked the legs every step of the way. I also used some glue to secure the board because i had noticed it sagging in the center between the screws. The shelves from the first set are in the back of my closet until I need 41 quart tubs, because the screws on the narrow ends are far enough apart to work with 41 qt.

I also got my herpstat 2 in the mail and I'm over the moon.