Testing PH Level Of Water - Rain VS Tap

This is intersting since the best growth usally is natural from rain water alone, I did a couple comparisions to see the difference in the PH levels. It appears rain water has a very Low PH compared to Tap or Distiled/Purifed water. The first pic is of stright rain water from a strom early today.

Here is Tap water showing to be closer to 6.0 PH I usally have to add PH ^ from our water source here.

I have heard of some indoor growers using rain water through out there grow, I have filled a few gallons to experiment with this and compare results. And will correct levels aswell for results-