Karin I have some questions for you regarding that- How often do you calibrate your ph probe with this system? I like the idea but was wondering what happend if it gave you a wrong reading for some reason or do you have some backup for that?
Do you go through aqualifter pumps fairly fast with this? I ask this because in my old Kalk reactor the guy I got it from said that I would have to replace the stirring pump inards every so often.