Shall I break out the stoichiometry and talk about breaking the baking soda into sodium and CO3 then add in the calcium chloride which breaks into Ca+ and Cl- Ions to bond with the sodium Na+ and Co3- ions?
AT what point in the chemical soup using boyles law do we reach equilibrium and no longer can drive the pH or the carbonate equation. How about if this equilibrium is reached and we still have an excess of ions. There are a lot of other metals and metalloid ions in saltwater that can then pick up these ions on both sides and create all kinds of other reactions.
But without going through a major chemistry lesson, lets just say that the carbonate ion will combine with the calcium ion and form calcium carbonate which is insoluble in a pH of greater then 6.3 or the fact that the other ions will form basic salt all of which are not reactive to raise or lower pH significantly.
This is why if you really read up on the two part DIY solution you will find that if you are a heavy user of the two part that you have to watch your salinity over a 6 month period to make sure you adjust it as it all turns into calcium carbonate and salt.
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