the only negative to running your fans too much...Is you don't allow the naturally available co2 to be used by your plants...It is better to use a thermostat or run fan 5 minutes once an hour or as many times as necessary to keep temps within optimum range.

lw
latewood Reviewed by latewood on . desired CFM for 4'X4'X7' w/ 400 watt? well the title pretty much sums up my question. For a room that is 4 feet by 4 feet by 7 feet and runs 400 watts of lighting, what would be the desired CFM? Rating: 5