My concern is the humidity in my indoor redfoot enclosure. I have an 8ft x 3ft tortoise table. I consider it a constant project and try to update/improve some feature at least annually. I set up a mistking system a couple years ago, which improved humidity, but it was still fluctuating a lot and it seemed the mistking needed to run often. I worried about the tort getting sprayed so often and being too wet too often. I eventually added a hygrometer and thermometer and then this August, while the tortoises could still be outside, I cleaned out everything indoors. I laid a pond liner in the bottom to resolve the leaking issues I was having. I used a living substrate model - lava rock, topsoil/sand mix and cypress mulch on top. I also added earthworms and isopods I purchased. I built a top so lights and everything were enclosed and humidity was contained. Humidity and temp were staying on point. About 4 weeks ago I came home to a flood. The mistking ran excessively for the entire day it seemed. The water level was enough for it to get over the pond liner and leak out worse than ever before. Fortunately the substrate was deep enough that there weren't puddles on the surface. I think the moisture was escaping through a gap in the wood between the top and bottom that had developed, the wood warped. To remedy this I dug out some substrate so it was lower then the pond liner all around, used weatherstripping to fill any gaps, and added another layer of plastic. Needless to say, this worked so well that I haven't refilled the mistking since (it hasn't even been turned on since the flood) and it maintains 80-90 % humidity, it fluctuates with light/heat schedule. The temp & humidity is exactly where it should be. Except now I'm starting to see mold/mildew. First their small hibiscus died and leaves got covered in white mildew and I just noticed small black spots on the inside walls. I left the doors open briefly to air it out. But I'm just not sure where to go from here. It's constructed with wood and i used a pet safe waterproofing epoxy on all interior wood. I have 2 redfoot tortoises- a 5-6 year old cherryhead I've had since he was tiny and a second I rescued from a wildlife rehab in May. When the rehab took her in, a month or so before I got her, they got no info from her owners. I have no idea how old and I'm not 100% sure if she's a cherryhead or not. The new tortoise climbs on, moves, and/or eats everything, so keeping plants has been tough with her. That's another problem, but that's why there are so few plants in these pics. There's one mercury vapor bulb, an infrared ceramic heat emitter that's hooked up to the thermostat, and the remaining fixtures have low watt plant bulbs. I've finally run out of ideas on how to fix this. I appreciate any help!