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I have a cool mist humidifier in my tent, using RO...
jamaljacksonstarted grow question 6 years ago
I have a cool mist humidifier in my tent, using RO water. Two of my plants that are close to the humidifier have started to get leaves with rust colored spots and yellowing. The left two are fine. Any ideas? The only difference is the mist may have been spraying on the first two.
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