I was wondering if my grow box setup would work with a 4'x4' instead of the orginal 3'x3'? I was thinking about it and, I wont have much room at all for my cool tube to hang down towards the canopy and if there isthe plants wont have enough distance from the light and risk burning the plants. I would much rather use a 4'x4' room with a 600w MH light system. If I need to modify my venting hole's to a bigger size, I will. I also would'nt mind adding more than 8 plants in my box as well :smokin: