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mrmateo started grow question 3 years ago
does anyone know a good height to keep my 315 cmh light during the 1st week ?
super star
2 weeks
super star mrmateo
Stardawg Auto
11 comments · 3 years ago
Week 1
Techniques. Defoliation
minimunchie answered grow question 3 years ago
315W grow lights should be kept at least 18″ from the top of your plants, with some models needing to be kept as far as 3 feet away. :muscle: good luck with her !
Enviros007 answered grow question 3 years ago
I use a CMH in the winter as I grow in the basement in Canada. They're very powerful! I would keep it at minimum 2ft. They give off a lot of UV and you could burn them quickly as seedlings. Start at 2ft or higher is my recommendation! Good luck.