Hi there!
i'm running a small tent, 120x90cm. Thats arround a 4'x3'.
my idea now was to turn both sidewalls into sog walls. that would be like 2 times 90x100cm (3'x3'+ like 4 inches), so, almost the double area!
i have a hps (400w) and two diy cob fixtures, each 100w (will build more i think)...