My tap water is about 220 pH in the 7s. My bitch is looking nice! On rez changes I add 10 gal of water then my 3 part nutes 1:2:3 ratio since I am in week 2 of bloom, then I adjust from there. This is my first hydro grow I only have 1 plant but shes a beauty and shes getting large! I have had no problems using tap water so far. I will probably flush with purified water the last week using floraKleen.

Peace