No one's tapwater is the same, and I believe Al's in Australia.
the well water i use is always changing the ph, i use general hydro food and the ph islawys to low i add the ph stuff and its fine for awhile then the ph start dropping again.does the ph up
when diluted with water hurt the plants.. yhanks for any reply
No, it's not harmful as long as you don't use too much, or use that which uses only salts (sodium) in large quantities. Test before and after using the products. Also, consider using something like SeaChem's aquarium buffer products. Much easier to buffer UP than down in my experience, much easier.
Edit: Ok, so we're on well water, and it's a very deep well (almost 800'). But, I've found some of the closer areas to us that do use muni water. And..! Lead, oh yeah. They're calling these pollutants industrial pollutants, but in our area that's impossible, these are naturally occurring pollutants. The one reading I really don't get, though, is the high nitrate level (averaging .45ppm!), trying to wrap my head around how that gets there in an upcountry source. In other words, downcountry, near the farms and cattle, yeah, I can see that, but up here..? Hm.