hi go go kid,
Currently using 2 x 600w hps digi ballast.
my flower room is 2m (L) x 0.75m (w)x 1.8m(h)
6" rvk fan
my temps are between 14-18c lights off and 24 - 30c lights on ( canopy temp)
shed grow ( designed in a way the intake air can't mix with exhaust hot air)
outside temps runs...