I try to keep my brewing as simple as possible.... I have read,somewhere, can’t remember where.....probably drunk when I read it.... but if I recall correctly, ph will effect your BH. Efficiency. I have the opportunity to get a https://www.testequipmentdepot.com/...6hADI0aoEynWB-Lb3ndNvVdA7JmYOxghoCqtEQAvD_BwE, I know the tip is not replaceable, but am wondering if it would be worth to get the calibration solutions for it as well as the storage solution? For my Water adds I go off a test result from 4 years ago..... I do a 50/50 distilled mix, with using bruNwater.