well, that blew my theory on the earths magnetic field. i had to try it, though. both untreated distilled water and the jug thats been out in the yard(not as long as i leave it, but so what) both registered between 5.5 and 6.0. there might be a slight leaning of the un-yardwater to the 5.5, but again, so what. they are both acidic, which i knew distilled water was.
i know without a doubt a magnet would work because i have done that. pos pole mag will make water more acidic. i used magnets in my hydro operation instead of hcl. it worked like magic and tested good every time. never had to add a thing, which is a good help for that.