I've been using carbon filtered water and don't have to adjust ph at all.
But... when I was doin perl hempies, I was using straight tap and had to do a good bit of adjusting. The pool ph down is pretty comparable to the ph down we normally use. I did testing with my ph pen, but I forget all that since I don't use it any more. Got a big bottle of it hanging around if ever need it.... who knows what crazy thing I'll do next. I'll try to remember to grab a brand name next time I'm in the garden. It was super cheap and worked just as well as the fancy stuff.
But... when I was doin perl hempies, I was using straight tap and had to do a good bit of adjusting. The pool ph down is pretty comparable to the ph down we normally use. I did testing with my ph pen, but I forget all that since I don't use it any more. Got a big bottle of it hanging around if ever need it.... who knows what crazy thing I'll do next. I'll try to remember to grab a brand name next time I'm in the garden. It was super cheap and worked just as well as the fancy stuff.