Plants are now 9 days old and lookin ok. Ph rises about 0.3 in 24hrs so its not a problem anymore. I went first 4days with plain adjusted water. Next three days I gave them 1ml/l of GHE total gro and now last 2 days I have given them 2ml/l of GHE total gro. The recommendation in the total gro bottle is 2.5ml/l for young plants. And then 5ml/l for veg after roots have grown.