This is where subcools super soil kicks ass. I used to have the same problems untill i started using super soil. Just type in Subcools super soil makes growing much more enjoyable. Your bitch is starving. Next grow add bone and blood meal worm castings and dolmite lime my plants stay green the whole grow now using just ph 6.5 water with some mollasass. I make my own super soil now. I mix 4 different kinds of orgainic soil 1 being shrimp compost together with dolmite lime, blood,bone,worm,bat,kelp meal,gh subculture-m(root inoculant),Pyro clay mono ortho silicate(food for bacteria). Even my bottom leaves with no light stay green I have to thank sub for showing me the way to grow the healthiest plants.