The humidity in my apartment is usually around 65% on its own so I'm sure its a contributing factor. One Entire wall of my apartment is glass so it causes a bit of a green house effect (although I keep the windows open to try and equalize the humidity). I keep the water dish in the cool side, as far away from the back heat as I can possibly get it, and I've switched from substrate (Cyprus) to paper. I've set up a dehumidifier to try and counter balance some of the effects in the apartment and I've seemed to get the humidity to drop to 75%. But the back heat on the tub is still reading at between 85-88. I'm using a digital thermometer with a probe that's been suctioned to the bin.. I'm more concerned about the temperature of the heat tape considering its taped to the press-board on the back of the shelving unit/rack.
Thanks.