Grow Room Air, Heat and Humidity

Grow Tent Condensation: Why Walls Drip at Lights Off

Grow tent condensation forms when moist air cools at lights off and hits its dew point. See why walls drip and how humidity, airflow and heat help.

Insulating a grow tent or grow room cuts heat loss in cold spaces. See how heat escapes, which materials help, what to avoid and where to begin.

A power outage during flowering often means a long night, not a lost crop. See what to check when power returns and how to guard the dark period.

An infrared thermometer reads leaf temperature at a distance to help you judge heat, VPD and dew risk. Learn how to aim it for reliable readings.

A basement grow room fights damp walls, cold floors and summer condensation. See where the moisture comes from and how to keep it in check.

An environmental controller runs grow room fans, heat and humidity gear from one set of sensors. See what to look for and where sensors belong.

Grow light heat builds fast in a small tent or closet. See where it comes from, why LEDs run cooler at the canopy and how to clear heat at the light.

Passive intake works in most grow tents when vents are large enough for the exhaust. Learn the signs it falls short and when to add an intake fan.

Grow room ducting works best when runs stay short, straight and sealed. See how bends, flexible duct length and leaks cut airflow, and what to fix.