Lights and HEAT

[Sixpackdad]

Installing an exhaust system for the MH/HPS is key.

First Time Grower Mistakes, White Widow Auto, Indoor, Soil, 400W HPS+400WMH

I grow in a shed so recycle heat it’s currently -5c outside and my ladies with no heat except lighting are a nice happy 75f vented hoods are designed to have glass the vent on one side is for intake the other side is for exhaust if you put glass on shade it can pull or push cool air through hood pulling heat away as it goes. In a closed loop fashion straight in straight out I have run 1000w HPS with vent hoods in this fashion at nearly 1’ from my plants with temps in the high 70’s in a 4x4 tent …