hey guys i have a 66 qt rubbermaid i got which i cut out the top and replaced about 80% of it with .25 inch hardware cloth (wire mesh) because i did not want to risk melting any plastic. I am having problems with heating and whatnot. I have a human heating pad underneath the rubbermain and a 100 watt bulb above it...my goal was to attempt to get ride of the heat lamp by using heating pads...but i cant hold heat very well....what are some suggestions to keep heat and humidity in a situation like this with an open top?