Quote Originally Posted by eL.migz
...go with a soiless mix without NPK so that it is a fresh slate. i was thinking 1/3 peatmoss 1/3 vermiculite 1/3 perlite with some dolomite lime mixed in.
That mix is guaranteed to give you problems. Believe me I have tried it. Peat moss is like pH ~4.5. Have fun. Even with the lime, it isn't going to be easy to get it right.
You are better off using coco or something if you want to go soilless.
I had excellent results with a mix of composted cow manure, leaf humus (pH buffer, wOOt), and up to 40% perlite. No pH problems ever since I switched over.