3 1000w hid, open hoods
I run co2 at 1000ppm in veg, 1500ppm in flower
An inline fan hooked up to a carbon filter pulls out air when the lights go off
I run a 3000 btu window a/c that's fitted into a custom made box that takes the hot air from the back via an inline fan, and has ductwork that brings in air for the AC passively.
A fan on each end (four oscillating fans) and two box fans on opposite diagonal ends to blow that heavy falling co2 back up in the air for the plants.
This is my winter smoke supply so it's my indica leaning cross strains that I like to medicate with while I'm stuck inside all winter. Mostly an even split of headband 818 and blue cheese. Then there's a handful of skunk 47 (they're the shorter ones in the room), and one lonely LA pure kush. She's my favorite strain to show off in the smoker's circle.
Gets me feeling like this...