Using the recommendations from this forum, I added a stenner acid doser to keep the pH down. After some quick calculations and testing, I was able to dial in the stenner in the first attempt. The pH hasn't budged in a week (although I still can't help myself from checking it everyday)!
I do have a quick question - what is the trade off between acid concentration and run time? I have a 5 gallon container that I currently have a 1:1.5 acid to water ratio stored. My mind tells me that 1:3 dilution would be better for the parts, but of course, it would make the pump run longer.
Any recommendations? Should I be concerned about running the pump for 4 hours per day. BTW - the stenner is the fixed flow 3GPD pump.