You will know you have a temperature problem when your marijuana plants begin showing signs of stress, specifically on the leaves nearest the source of light (or heat if it’s a different source).
Keep an eye on the following symptoms:
- Leaf edges curl upwards
- Yellowing leaves
- Brown spots on leaves
- Leaf burns
- Slowed growth
Preventative measures are the best way to keep your grow room temperature from becoming a problem. You can get lights that are either air or water-cooled, therefore keeping the heat produced out of your grow room. It basically just uses tubing to redirect the heat produced by the lamps outside so the same amount of heat can be produced without actually affecting your grow room.