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What humidity level should my growroom be at?

April 26, 2017growroom humidity level

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What humidity level should my growroom be at?

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The ideal humidity level is around 50% (40-60% range is fine). If your humidity level rises in the flowering stage, then mould spores have a greater chance of harming your favourite plants. Ideally you should try to lower the humidity level in the last weeks of flowering to around 40-50%.