If you are using flexwatt with bins or even flexwatt with any caging, the ambient temps are going to need to be controlled by the room itself. So unless you run an oil filled radiator on something like a Herpstat HP or you just keep your house in the high 70s like i do, flexwatt alone probably wont work nor will tubs.
Like i said, i use cage stacks and the ambient in the cages is around 80F. Then they have a hot spot of 92F with flexwatt. This is for everyone. The humidity is varied depending on my retic, boas, BP and dumerils.
If you arent breeding and just keeping a few pets, my vote is go for stackable PVC cages, They have a more efficient footprint and much easier to get the husbandry correct on than tanks. Tubs/racks are great if you are breeding.
Here is an example. This is my 3 AP T10 cages on the left and 3 AP T8 cages on the right and soon to be 3 AP T25s to the right of the T8s. All 9 cages will take up about 16' of wall which isnt too bad. This pic is kind of old as i have switched back to aspen and given Dottie her smaller hides back which were on the roof of the right stack as she doesnt care for the larger hides.
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