I have hit the upper limit as far as being able to raise my dkh in relation to my pH! I have a Korallen 3200 reactor with a second stage too. It's the larger sized reactor. I have a 250 gallon tank. I maintain low nutrients (NO3= ~1.0ppm, PO4= 0.01~0.02ppm). It's stocked with all sps that are apparently demanding a lot of Calcium.
Here's the issue: My pH is a solid 8.0 at a dkh of 7.4- 7.5 (meas at 9:00am). If I raise the dkh to 7.7-7.8 (by increasing my CO2 bubble rate) the pH consistently drops to 7.9 (meas at 9:00am). Ideally I would like to have dkh at 7.7 with a pH of 8-8.1 if at all possible.
Any thought or suggestions would be greatly appreciated.
Here's the issue: My pH is a solid 8.0 at a dkh of 7.4- 7.5 (meas at 9:00am). If I raise the dkh to 7.7-7.8 (by increasing my CO2 bubble rate) the pH consistently drops to 7.9 (meas at 9:00am). Ideally I would like to have dkh at 7.7 with a pH of 8-8.1 if at all possible.
Any thought or suggestions would be greatly appreciated.