I went over your diary. And if information in diary is correct then it's most like your phing your water.. if your using only water. Peat moss based mediums tend to be acidic already so if you buffer your water you actually drop the ph too low. If your soil is "potting mix" chances are it's got everything your plant needs to grow and using regular old tap water works (depending on source of course). I grow a lot of hydroponics but I don't ph my water for my soil grows because my water phs at 7 from the tap, so the acidic soil conditions bring the ph right in line to what cannabis likes.. Soil growing tends to be less is more and keep it simple..