So I have 6 plants all looking big, green, generally healthy, and growing like crazy. Except for this white powdery shit thats showing up on all of them amongst the lower leaves. Its showing up as just white spots but is like a powder that can be brushed off, yet keeps recurring. There is an attachment showing this, its hard to see but its all those lighter looking spots. Also I'm in veg, under 1000w mh+hps, fox farm, cool mist humidifier, good ventilation, 6wks from clones Im worried about this affecting anything long term, hoping its not mold. Let me know what you think and I'd appreciate it.