How it works: There is no actual chlorine in the water in the pool. The dissolved salt is electrically separated into a sodium and a chlorine ion, in the round barrel at the top left. This is called "electrolysis". In that container there is free chlorine present, as in a chlorine pool has chlorine in all the bath. The chlorine ions recombine with the sodium ions when the water leaves the reactor, so there is no free chlorine in the bath itself. Disinfection thus occurs only in that reactor vessel.
The salt just stays in the pool. Only a little chlorine disappears over time. That is not compensated for by adding extra salt, because you'll also get extra sodium. Instead, a little hydrochloric acid is added (automatically). That's HCl, and actually contains only chlorine in a handy form.
The water is not very salty actually. There are 5 grams of salt per liter, while seawater has 24 grams of salt (NaCl), and another 5 grams of magnesium salt (MgCl) per liter. You can drink this pool water and not taste any salt.
The gresites (small tiles) for the pool need to wait till the water reservoir (balsa) is finished. When the gresites are applied the pool needs to be filled with water within a day. Gresites don't like the full sun.
That balsa will be started next week Thursday, if all goes well.
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