i just finished my sullies winter house. i just attached the CHE about 12" above from the top shell of the sullie. my question is this, since i have dry hay and dirt inside the enclosure. i'm concerned that this will be a fire hazard. i mean its pretty warm in the enclosure right now. is there any chance of the che producing too much heat and causing the the hay to catch on fire. if anyone can help out i'd really appreciate it