pthobson
Well-Known Member
I don’t know how they compare but i have used a 250 in a 3x3x5 before with 4 in exhaust/carbon filter and just a passive intake and my temps hovered around 80-85F. Room took outside of temp was probably about 70-72Only hps that I have not ran was 250 how much heat do they create compared to old school 150hps?