My friend should be finishing up his grow this month and I will finally get my big fan and filter back. Should solve any heat issues. I'm actually building another box I think. I've been sketching manically the past 3 days and its only a matter of time before I get antsy and start putting something together. I think 11" x 11" is too small. I think the plants would do a bit better if they had a little bit more room so I'm going to make a new box that is 18"x18" and just a bit taller at 30". Still going to run them vertical. I'm going to frame it out with 1x2's and use Velcro and Mylar reflective insulation to skin the box instead of making the whole thing out of wood. So its more like a tent framed with wood more than anything. Going to use pegboard for the top and bottom for airflow. It will be budget friendly and pretty effective I think. We will see what kind of gremlins show themselves as I start building though.
=D