The fan will definitely spread mold spores but the mold is there because of stagnant moist air. The only way to make the area inhospitable to mold is to provide - good air circulation, low humidity, fresh air exchange.

It won't matter where the spores land because the air flow created by the fan would will prevent the spores from taking up residence and reproducing. Mold is always there, just waiting for the right conditions.

What are you going to spray with?
mikeyjo Reviewed by mikeyjo on . Powdery Mildew Two Weeks from Harvest..yikes I have been battling mildew for a little bit now, it was well under control but a few days ago I noticed on the buds of a few plants. I bought SuperNatural Soya'Nara... it's a mildew\pest spray. When is the best time to spray the buds... right before the lights go on I am guessing? I'm gonna go easy, the last thing I need is mold but do you guys spray this deep into flower? The product itself is not harmful at all if smoked, it's basicly just soy bean oil but I am a little concerned about Rating: 5