Edit: Not worried about too much heat. Worried about not enough. I am trying to figure out how soon I can start my seeds. I'm planning to grow 2 autoflower plants in my basement, and will be growing in a 4'x3'x3' styrofoam cooler. Currently the basement temp is 60F. That temp should be pretty constant for this time of year. Planned lighting is 8 total 26w CFLs (4 per plant). The inside of the cooler will be ligned with mylar. I have a 4 inch 100 CFM vent fan, and am thinking 2x4 inch passive intake ports. Other than that, the cooler will be pretty much sealed. Any guess on what the CFLs will do to the temp inside the cooler? I do plan on running a no plant test to check the temp, but am just trying to get a rough idea on when I can start. The max temp in the basement, even at high Summer temps is probably about 72F. Any thoughts are appreciated. Thanks.