What should I do with the temperature control scheme for grow room?
Controlling heat in the grow room The least expensive way of reducing the heat in the grow room is to vent out the heat and replace it with cooler air. Sounds simple right? Well it is, but what most beginners forget is that you can't blow the hot air out without a way for the cool air to get in to replace it. The best way to setup a venting system like this is to mount one exhaust blower on the inside of the grow room up high to blow the heat out, and another blower on the outside mounted down low blowing cool air in. Hot air rises, cool air settles. Exhaust blowers are rated or sized in Cubic Feet per Minute (CFM) of air, like "265 CFM". This is the amount of air the blower will move in one minute without any restrictions on the intake or exhaust. If a blower is rated at 265 CFM but it's connected to a 25 foot long tube like a dryer hose, it's not going to move 265 CFM because of the resistance in the hose. Aluminum tubing with smooth inside walls creates less re...