I went ahead and bought a PH tester from ebay for 10 bucks and it works fine. They come with a pack of some chemical that you put in water and on the packet it says what chemical it is and exactly what it's ph level is, so you can adjust the ph meter's sensitivity if for whatever reason it is off a little bit.

Buying that meter was definitely worth it, especially because I found out my tap water was at 8.5. I didnt know what to do and i didnt want to leave jugs sitting around to distill either, so i thought about what i could do to alter the ph...

BRITA! what happens when the water goes through the filter? Who cares! But it comes out at 6.3 ph every time! one filter has lasted me about two months now, spanning 4 flowering plants and +-8 vegetating

i have not experienced any problems that i would be able to relate to the water quality i've used so far.

hope this helped!