I was actually just telling Mr. Trichome this in the Silica Blast thread- the amount of pH down you'd need to interfere with ferts or salt up the soil is EXTREEEEEEME!
Do not fear pH down, but wear your safety RayBans. Any eye protection is better than nothing. H3PO4 is nasty shit.
You should be fine as long as a) the hardness is not much over 300- you can get 'hard water' nutes for that level and b) you either use buffered ferts and they keep your pH at 6 or you check and adjust the pH frequently. Tap water, particularly after a change to the city water system, isn't as consistent as we would always like to think.
stinkyattic Reviewed by stinkyattic on . Water PH is 8.1 Anything Poss Good I've been carrying my PH tester from house to house just to make sure and it is the average. I just had a new pipe ran from the main the PH is 8.1. I am about to begin a soil grow and I am concerned with possible salt build up from all the PH down necessary. RO water is out of the question for now. I just put to much into this already. Is there a way to test your water it is NYC tap. It's funny because they say it is what makes the pizza and bread so good. I've thought about the whole Rating: 5