They have all kinds of home remedies for ph on here. I cant remember what they are but Im pretty sure they are for quick fixes not permanent solutions. I use advanced up and down. Cost like 50 bucks for both but ill probably never use all of it. I use 5 to 8 drops at a time. Just something for you to think about. Did that milwaukee come with any calibration solution? You might wanna make sure its right on before you go adjusting your water. It would suck for the pen to be off. Just my 2 cents.