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Originally Posted by Woodstock  Test those when dosing kalk for sure. You could have TOO much calcium or you may need to add magnesium and a buffer (sodium carbonate - BAKED baking soda) to increase your alk. |
Hey Doni, I have this information from the "Marine Reef Aquarium Handbook" by Dr. Fobert J. Goldstein....Page 23, It is important to raise aquarium concentrations of calcium to that of seawater and alkalinity for three reasons; 1. Calcium, depleted by stony corals and coraline algae, must be replaced. 2. Alkalinity helps maintain a high pH. 3. Calcium saturation will precipitate phosphates, protectiing the aquarium against nuisance algae blooms. (Calcium corbonate is less soluble than calcium phosphate.)
Note: Should you use baking soda (sodium carbonate) to adjust alkalinity? Absolutely not. Commercial preparations for raising alkalinity are balanced mixtures of sodium carbonate and sodium borate. In the right ratios, they can adjust alkaline reserve without suddenly rasing pH.
Baking soda alone will rapidly raise the pH and stress the inhabitants.
Thought I point thie out, seems to be from a good source.