hello everyone, first time grower here, just built a 2 ft by 2 ft and 3 feet tall grow box. I’m having to grow in the garage and I live in an area with the two extreme weather, summer time it can get to about 90 degrees to 100 on some days and in the winter it can snow. How would you set up the ventilation system to run in both high heat and cold conditions? Keep in mind This is a budget grow box only way I could convince the wife to do this lol. I plan to line the inside with styrofoam then cover it with Mylar to help with insulation issues. Any suggestions would be appreciated.