water with a Ph of 6.5 -7.0 would be better & most tap water is better than distilled water...IMO.

You really don't need both lights...yet...and I wouldn't get to close with that MH light

Did you have a good root system developed?...before transplanting? If you used too much 'Thrive Alive' or Guano?...flush with 6.7ph tap water and pray...