I installed a Stenner variable speed acid pump with a #1 pump tube that discharges a maximum of 5 GPD on a #10 pump setting (maximum). I'm diluting the acid 4:1 with water. I'm also using a Goldline controller which has a 2 hour maximum run time for the acid pump.
I'm trying to lower the pH from 7.8 to 7.6 and the acid pump times out and I have to reset the controller every two hours. Are these systems designed to just "maintain" pH level or can they "lower" the pH level. All that is happening is the pH is not rising, but I can't lower the pH level.
Do I need to increase the concentration of acid or change the pump tube to a #2 which discharges up to 17 GPD to have the pump actually lower the pH level or manually add acid to get to the desired pH level and then have the acid pump "maintain" that level?