If you add enough liquid bleach to add 2 ppm of chlorine to your pool, then you are adding 2.2 ppm of salt (NaCl) -- remember that the "ppm" is parts-per-million (weight fraction) or equivalently milligrams-per-liter so the "ppm" number is dependent on the weight of the substance. The 2 ppm of chlorine refers to HOCl which weighs a little less than salt. When you add NaOCl (sodium hypochlorite, or bleach) that makes Na+ and OCl- some of which converts to HOCl. Then, the HOCl and OCl- get used up over time and produce Cl- (the H+ goes to water if you are maintaining pH) and the "O" leaves as oxygen gas or goes to water (depending on what the chlorine reacts with).
There is no calcium added. Adding acid will add chloride ion (Cl-) if you are using muriatic acid or it will add sodium (Na+) and sulfate ion (SO4(2-)) if you are adding sodium bisulfate. However, if you are using bleach, you normally do not need to add any acid because the increase in pH from adding bleach is temporary since the "using up" of chlorine is an acidic process so the net result of adding chlorine and having it used up has no net change in pH (technically, there is a small rise in pH due to extra sodium hydroxide, or lye, that is added to or left in the bleach to keep it more stable by increasing its pH -- the amount of TDS from this extra base is only 0.1 for the example you gave so is negligible). See the post on pH for more information.
You shouldn't need to add baking soda that often either. It sounds like your situation is one of rising pH, then adding acid to lower the pH but that lowers the alkalinity too, and then adding baking soda to raise the alkalinity. Something is wrong in your pool system -- either the chemistry is not in good balance (pH is too low, alkalinity is too high) or the water is getting aerated too much or both. Can you give us the full set of numbers, if you have them, at a single point in time?
FC (free chlorine)
CC (combined chlorine -- total chlorine minus free chlorine)
pH
TA (total alkalinity)
CYA (cyanuric acid)
CH (calcium hardness)
Temperature
Also, is your pool open without a cover? Do you have water features -- fountains, water slides, etc.? Is the pool used a lot and is there a lot of splashing that goes on (i.e. kids, or adults who remember what it's like to be a kid )?
Thanks,
Richard
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