thx for your help,
you say to add a few drop of ph reagent to it. does that meen the quantities of drop vs volume of kh solution is not important at all?
also, it will turn green yeah but how green? dark green, light green, etc? some test like nutrafin are bad like that. I'me trying to find lamotte test online and dont find any. would these test easier to read?
with tha drop cheker, there is that Co2 test reagent that comes with the cheap ph chart. should I use this? colours are easy to read (ph6=yellow, ph7=light green, ph8 = dark green, ph9 = pink, etc)
what is that Co2 test by the way? the device is sell to mesure ph that I see so it is a ph test?