just curious to what the title says.

i have heard that, low humidity could cause thin leaves. and i have seen to what i was told the reason for some of the west coasts biggest trees were results in high humidity.

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bump!

does this have any major affects? how about during flower?

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i also heard it causes narrow leaves. i also heard it cause the plant to make extra resin. i read that some where i forgot where.

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www.zombo.com

real low humidity would probably make your grow room really dry, i think you want 40-60 % humidity