Hey guys I'm was hoping to get some advice on the highland growers on how they cool their setups at night. I need a smaller compact ac unit or a very efficient swamp but small swamp cooler that i could keep in my grow rack. Window ac isnt an option unfortunately. I wanted to possibly setup a peltier but seeing how the cover of my grow rack is plastic i think id end up destroying the cover in the process. I am at the moment using ice packs and this can get the temps as low as 16 c but I need a more permanent solution thanks for the help!