Man, "abudsmoke" thats quiet a set up you got. I have a electric heater in the room, so even if it's 20* (in Wisconsin (U.S.)) the room doesn't get below 64* even with the windows open, but in the future i will try to open them up in the day, when the 400 watt MH light is on, makeing heat.
I know about the cost of the tanks, and the fact they have to be pressure tested every few years, was a S.C.U.B.A. diver and have a 4' tall oxygen tank in the garage, with a acc. tank for welding. This is my first grow with white widow plants, so knowing now that they need CO2, i will open the windows from time to time. Been dealing with this for 2 months and there only 6" tall.
Thanks Veteran |