Ceiling is 85" tall, air will be moved by rotating fans. Air in SOG room will be filtered by 6" fan with tall boy (490 cfm is that enough) air will be pumped into old coal chimney that runs directly to the roof. Everything is concrete, I'll take pics when were done. Yes we have a water tap with a drain and lastly we have a lock on the door.
We want a good yield probably half to sell and half to smoke, were hoping for better quality than my last grow and were trying to do perpetual SOG