I have some rocklock and deadhead and platinum kush going. and rl and dh leaves are yellowing and dying. been doing this for weeks. I did over water them and they got stunned but that was 2 weeks ago and they've grown a lot. the platinum does amazing.. green as can be. ph is kept 5.8-6. ppm is 650 700 now but in beginning was 4-5. 3-4th week veg. nuts are floranova and I added some cal mag thinking that might help. using tap water with ppm of 300. can anyone help me figure it out? I'm growing in rockwool