purplehazin
Well-Known Member
Seems like you would have to have ventilation cfl's create heat also and plants like fresh air. I'am new to growing indoors but my little 160 watt cfl veg cab would easily reach 100 degrees in about 2 hours without a fan. With a ambient air temp around 70
I agree ventilation is key; but using a HID vs CFL, you need a much bigger fan to get that hotter air out, thus more noise.