are you ph'ing your water then letting it sit out to evaporate the chlorine? You need to check the ph again after it has sat out. Sounds like you have one of those soils that have nutes in them. From all the posts i have read on here, that is not very good. You need a regular potting soil with no nutes. Do you have access to soils like Pro-mix or Foxfarm? I used miracle-gro soils first few times i tried growing.. both regular and their so called organic soil, i failed with both soils. I got foxfarm ocean forest and have had nothing but awesome results.