I also have a snake in a 32 quart tub. I'm using Reptibark mostly because I prefer the look of it over newspaper or aspen and have just made enough holes to deal with the high humidity it brings. I've got 50+ holes in my tub, but humidity's usually anywhere between 45 and 55 and when Aradia's in shed I just spray down her substrate a couple of times a day and she's set. I do have to run a space heater pretty much whenever I can, though. It gets cold here in winter and the house temps do drop when nobody's home because the heat is set lower. If I had the space, and with the problems I'm having with my ambients, I would switch her to a tub or an AP T8 or something similar.