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does anyone know a good height to keep my 315 cmh ...

mrmateostarted grow question 6y ago

does anyone know a good height to keep my 315 cmh light during the 1st week ?

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Techniques. Defoliation

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Blacklistedanswered grow question 6y 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. 💪 good luck with her !

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Enviros007answered grow question 6y 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.

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