The guy that I got my normal from last week had no holes in the tub and had condensation on the sides, which indicates 100% humidity. I know that is to high, but she is healthy as can be! No signs of RI. I have put lots of holes in the tubs to bring it down to 65%. And I keep the water bowl far away from the heat source until they are in blue, then I push it towards the back until I get the humidity level I want.