Quote Originally Posted by keithxs
I have a small grow room and typically only grown one plant at a time with a 250w HPS, but still gets hot (low 90s..way too hot). I'm considering getting a cool tube HPS and have ventilation run into the wall through a small hole that I could fix when I move out. Ceiling is not much of an option as it eliminates a stealthy grow.

My main question is, does anyone see running it into a wall a problem? i might have to go into the attic and make sure there is a place for the heat to escape the wall.. This damn house has bad A/C and the summer has been too hot, which forces me to only grow during the cooler months.
I personally dont think going straight into a wall will help much. Most walls have a cap at the top in the attic. Pretty much just something like a 2x6 laid flat. At least everyone that ive seen. I just think you would be spinning in circles doing that. If you could run straight into the attic or another room, i think would be your best options unless you wanna spring for a window unit. I would suggest the portable ac but i tried that route a couple times and those pretty much suck. Work great in the cooler weather but come summer, its like not even having one.