I have had my plants under a fluorescent light until a few days ago when I moved the plants under a 400w HPS. On a few of the older leaves there are brown spots forming which may be caused by light burn or heat stress, I really have no idea.
Possibly relevant info:
1. There we no problems until two days after I put the plant under the light.
2. It is about 2 feet away from the light.
3. Watered with distilled water.
4. It is a soil grow.
5. I feel that it is unlikely a pH or nutrient problem because there have been no problems up until now.
Possibly relevant info:
1. There we no problems until two days after I put the plant under the light.
2. It is about 2 feet away from the light.
3. Watered with distilled water.
4. It is a soil grow.
5. I feel that it is unlikely a pH or nutrient problem because there have been no problems up until now.