75 oncold side is to cold, try and maintain an ambient temp of 80-82F on cold side. My ambient temp for my entire enclosure is the same 80-82F with a hot spot of 85-90F. And my humidity is always hovering between 60-70% day and night. My ambient temps at night sometimes dip to 78-79F due to room temps being cooler at night. No issues here ☺️