Air flow is the key. Also google “swamp cooler” this is cheap way to cool it down. I have my box in a corner to allow a good amount of air flow. I am lucky to hav a window nearby with a window fan in it, eventually I will put an A/C unit in it. Get a cheap fan for inside the box and keep a regular tall fan in the room blowing on the box just to increase the air flow around it. I can post pics at some point, plants are going good. Don’t be disappointed yet, just have to make a few adjustments and should works for yah!