Is it fuzzy or just wilted dark black spots?
Im sure your poor girls arent getting much light with that thing 5 feet away! Shake was more asking why arent you running the hps all day or at least 18/6. Are you splitting up the cfl time and the hps time, or do both of those run at the same time? Sorry, Im a bit confused about your lighting scheme as well.

How old are the plants? And you said they are 17 inches? Where on the plant is affected? (old leaves, new leaves)? and runoff ph?

Also, why are you foliar feeding water? That can actually leach nutes out of your plants and can DEFINITELY help mold growth get started! You said its infecting the clone? How many plants is this affecting and how?
carinia Reviewed by carinia on . black leafs.. not lookin good I have a plant that's showing a very bad case of this, I don't know what it is. It's leafs are turning black, and it's drooping like hell. Leafs feel healthy aside from the look.. A few others are starting to show black on their leafs ... getting worried :( Rating: 5