I posted a bit earlier about whether or not there could be too much humidity in a tank and recieved only one reply (thanks...). The poster suggested backing off on the twice daily mistings and allowing the cage time to dry out in between.
I had misted that morning already, so I didn't mist that night. It continued to stay 100% wet and damp in the cage (29g glass tank with hood). It didn't dry out even a smidge. I woke up this morning to a tank completely covered in an extremely think layer of fungus (mold?). It was white and fluffy. At least an inch think everywhere, some places up to two inches think. I could see through it though. It was even growing on the driftwood and water fall. It was the most digusting thing I've EVER seen before, much less in an animal cage. I thought for sure my new little crestie would be dead, but he's still with me.
I hope it didn't cause any ill side effects that just haven't shown up yet. Anyway, I completely tore down the habitat, threw away a bunch of stuff and have the decor soaking in bleach water. I put plain paper towels in there and a few clean plants, etc..for him to hide out in.
I'm thinking there isn't enough ventilation in the cage - if I replace the hood with a screen top, should that clear up the problem? I think for now I'll also stick with paper towels and go easy on the misting.
Has anyone ever had this happen before? I feel like the worst pet owner in history right now. 
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1.0.0 Thoroughbred
0.0.1 Mali Uromastyx
0.0.1 Bearded Dragon
0.0.1 Corn Snake
0.0.1 Milk Snake
1.2.0 German Shepherds
0.2.0 Cats
0.1.1 Birds (Conure and Cockatiel)
1.1.0 Rabbits
4 Fish tanks (SW and FW)

