ok there is your problem, I have been using growbig for YEARS. At this point I would start feeding them 1 tsp per gallon every watering. Growbig is great stuff your just underfeeding them. and to be honest don't waste your bigbloom in veg cycle cause you don't need it. In the pic i posted, those ladies were fed 1 teaspoon per gallon every watering, I know the bottle says 2-3 teaspoons every other watering but I found out that 1 teaspoon per gallon every watering works better but make sure you only have to water every 4-5 days. Also have you checked your ph of your water, perfect ph for gb is 6.5. Another way to green them up real quick is to foliar feed with 1\2 teaspoon per gallon and spray both sides of leaves.