I think I have a Ph imbalance with my violets. Some have yellow edges, yellow spots, dead edges, white spots. I have checked the Ph with an aquarium kit and my bottled water measures about 6.4. What is the best Ph for violets? My soil is equal parts sphagnum peat moss, vermiculite, and perlite. I leached the soil and temporarily stopped the fertilizer. I use either Peters 12-36-14 or Optimara 14-12-14 at 1/2 tsp per gallon every two weeks. I have tried different bottle waters and tested them but I can't seem to find anything that helps. Any suggestions?