Has been a challenge to get the pH up above 8.0. Success was found by adding ventilation into the canopy, being careful to maintain alkalinity, using kalcwasser in all evaporation replacement water,
and by adding a pellet media in a cylinder chamber to remove CO2 from the air intake into the protein skimmer. i.e., scrubbing the air entering the skimmer. Also found a recirculation pipe online to take the air exhaust from the skimmer and return used air back into the skimmer.
This is the Apex graph of CO2 the past couple days. The higher CO2 reflects the end of the daylight cycle (led lights), with pH falling at night.
The big step up in pH graph was from the weekly 80 gallon change With new saltwater. The water changed also involved vacuuming sediment in the sand substrate and otherwise cleaning the tank.
Curious what anyone else found to help?
I do have a high biological load of fish, a dozen tangs, three pyramid butterfly, Fox face (loves to eat the Zoas), and three dozen tiny springeri damsels.
