I am currently in my 4th week of veg and all of the sudden when turning on the lights today I can across a terrible problem with my plants. They have yellow spots burned into one of my girl scout cookies leaves all over, and white powdery stuff on top of one of the leaves. I have not changed any methods in the past couple days and it suddenly happened. Im using a 400 watt MH and 4 200 watt CFL to total 1200 watts covering 12 plants. Using soil with additives, and adding GH floranova grow occasionally. The white powdery crap is only on one leaf, while the yellow spots are scattered throughout the plant. They are randomly placed some in mid leaf some outside, and are decently sized. Any advice would be greatly appreciated. thanks in advance!
