More good info @MicroDoser! I just started researching a good PH meter yesterday. Until now, I have been using solution to test after adjusting and I just don’t feel like I can get very reliable results. My tap water starts out around 7.0 and I have been shooting for 6.0 or just a little lower but am not sure if I am really getting that. Looking through a little tube and comparing to a color chart on my cell phone is hard for an old man whose sight is not what it used to be.
SkyDog