The PH in my tank cycles from a high of 8.2-ish at 7PM-ish, to a low of 8.0-ish at 7AM-ish. This is in a 240 gallon tank about 6 months old. I've watched some BRS videos that recommend 8.3 as the optimal PH, and suggested adding control to stabilize it. So I had my maintenance guy set up a CO2 scrubber, with solenoid control to the air intake of my skimmer, so I can control whether the skimmer draws air from the scrubber, or from the air in the room. Using this, I can somewhat stabilize my PH and flatten the sine wave curve from 7 to 7. But it never goes above 8.25.
So, would it be better to just have the scrubber supplying all the air to my skimmer, raising the PH as much as possible? Or would it be better to use the control I have to stabilize it around 8.1. If the answer is the latter, ultimately I might try dosing kalk or something, so I can stabilize the PH around a higher setpoint around 8.3...
So, would it be better to just have the scrubber supplying all the air to my skimmer, raising the PH as much as possible? Or would it be better to use the control I have to stabilize it around 8.1. If the answer is the latter, ultimately I might try dosing kalk or something, so I can stabilize the PH around a higher setpoint around 8.3...