Hey Weed..

I have e-mailed a couple soil companys and asked for specs on their soil. I have always used Black Gold or Miracle Grow. Miracle Grow is a testy soil and its PH is 5.0 i belive.. I have not heard back from them to confirm this.
When I have used Miracle grow I water with 8,0 water and I have had PERRRRRFECT results...

There should be no need to use anything besides city water for SOIL grows.. If you go HYDRO or Aeroponic.. there may be a need to filter your water.. depends on the PPMs of your water as it comes out of the tap.

Yes, NITROGEN when vegging... I have used SHultz, Miracle Grow, Super Thirve and have seen NO difference.. others may claim different.. I have also used fish emulsion, bat guano etcetera..

The most imporatnt elements are, PH, LIGHT (proximity to plant), TEMPERATURE, and adequate FOOD/nutrients... With proper PH, it is easy to tell exactly what a plant needs... when the PH is off, the gardner gets confused and can't tell if the plant actually needs more NITROGEN or if it just can't access the nitrogen that is already in the soil...

you can also get a PH tester in the POOL section at Home Depot.. I purchased one there today for a friend..

iloveyou