I know clear plastic bins are not ideal for torts due to the stress of them seeing thru the plastic, but, if I was to cover the outside with paper or fabric or even spray paint, I assume this is ok as long as it isn't see-thru anymore, right? Also, if I'm using coco coir and orchid bark as my substrate, do I need to worry about mold growth at all if my humidity and temp levels remain consistent (80% humidity & at least 80 degrees)? When it comes time to clean the enclosure, how often does the substrate have to be replaced?