Hey, I recently purchased a rack from RBI plastics and a thermostat. I have 1 male adolescent and 3 adult female balls living in it. they've been in there a few days, and I noticed that 2 tubs in particular, the one with the biggest female and the male, collect moisture like crazy. I can see the moisture on the front of the tubs, and after drying it out and putting fresh newspaper in, the newspaper becomes soaked through within several hours.
should I use a different substrate? drill more holes in the tubs? I'm concerned about respiratory problems. why would this even be happening?

