The towel trick worked wonders for me. I had all the daggon trouble in the world keeping Gemma's humidity up when I first got her. I dampened one towel, placed it over 3/4ths of her lid, then placed a dry towel the same length on top of the damp one. Now I mist her enclosure maybe 2, 3 times a week instead of 2, 3 times a day. Her humidity stays in range & the ceramic heater & water bowl she's got in there with her do great together.

As far as everything else, I can't really give any advice because I haven't experienced it yet. >.< I hope the humidity trick helps out, though!