thanks alot this helpsAre you using a ph pen??are you getting different readings?? if so sometimes the electrode dries out if you don't keep it wet it dries out and gives crazy reading.If this is the case you can try to re-calibrate it with A BUFFER SOLUTION 7.01 and or 4.01,or you might have to buy a new electrode.ALSO they have storage solution to keep your electrode wet,some people say mineral water works also but I never tried it.Hopes this helps.