My dart frog terrarium stays between 73-80 degrees throughout the day and night and the humidity is always 80%+. I am having trouble keeping the condensation off of the glass, I installed a small computer fan into the top lid that helps keep the condensation down however if I keep it on for to long it will lower the humidity down to about 70% and I was told to keep it above 80% for darts. Does anyone have any ideas on how to keep the condensation down so that I can see through the glass?