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- #61
Yeah the 4" vivosun air filter sucks in pretty good air and I have a 6" fan blowing on the opposite side. I have it directly pointed to the roof so maybe I should direct it more to the plants to help prevent the mildew?Good... make sure you have plenty of air circulation in there. Higher RH leads to Powdery Mildew and you need to keep a good flow of air moving around at those higher temps.