Originally Posted by Sebastian_Troy
Do you know how long I need to bake it for and how I can tell it is baked?
And does the pH come back up again once the co2
has dissolved out of the water?
Cmor got you covered on the baking time. At least 1 hour at 350°.
The pH will rise or fall depending on what you use, but a I mentioned, it's not a big swing either way. It will return to it's previous level in a few hours.
An Improved Do-it-Yourself Two-Part Calcium and Alkalinity Supplement System by Randy Holmes-Farley - Reefkeeping.com
Sodium Carbonate - "Adding on the order of 0.5 meq/L of alkalinity increases the pH by about 0.3 pH units immediately upon its addition"
Sodium Bicarbonate - "Adding on the order of 0.5 meq/L of alkalinity drops the pH by about 0.04 pH units immediately upon its addition"