i have 3 girls im having problems with im 3 weeks into veg and hey are looking bad drooping and turning yellow i nute burn them with 300pm soflushed and feed them 130ppm now ph 5.9 6.0i allso over watered them at about 6 days ago and they were starting look better when i educed watering to waiting till cube is dry and now they are looking bad again with alittle of browning of he roots what should i do pro's