I have only heard that they're fine if there is no condensation. I can say that my accurite sometimes gets as high as 75% and my BP is fine. Just use small water bowls and make good ventilation and I think it should be fine.

As for a 41 qt being too small for a bp, I think they should be fine. Here is a 41 qt sitting on top of a 66 qt, housing my bp. The 41 qt is for my baby boa, when I get her. I may have to get smaller though I don't know.