MafooFarms wrote: ↑Sat Mar 19, 2022 4:29 pmYa GF I use general hydroponics acid to lower my pH. The water out of my tap is around 8.5-8.7 as well. Crazy alkaline.
I seen people use lemon juice, white vinegar, or even powdered citric acid if you dont have any string hydro acid around.
Just use your pH pen. You know. Add a mL, stir, wait 60 seconds, dunk the meter in.
Also i dont know if this is true or not, but I seem to remember being taught that the pH meter should be moved about to get an accurate reading. Like dont just dunk it in still water. Stir it about a bit.
Good luck mate

