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Its hard to determine from the photos whether its potential light stress or Nitrogen deficiency. I'd recommend raising your SF1000 to around 12 - 13 inches above the tallest flowers in your tent and then waiting a few days to see if that brings some colour back to your leaves. I don't run the SF1000 closer than 12 inches so 9 inches may be a little bit close for your ladies. If the fading in the leaves continues I'd recommend decreasing your FloraBloom by 1 - 2 ml/gal and increasing your FloraGro by 1 - 2 ml/gal to give your girls a boost in Nitrogen and see if that does the trick. Hope it helps you, good luck!