It is absolutely essential to understand "general biology laws/rules" when talking about balancing the elements - (i. e. cations +,++,+++,++++ etc., idem for anions).

1st rule is that the "pool" of cations will, inside, remain more or less stable, all excessive increase of one of them will have an impact on the others.

2nd rule is that each cation has the impact depending on its relative weight in the human body, (i. e. approx. Ca 1000gr, P 800 gr, S 300 gr, K 140 gr, Na 100 gr, Cl 80 gr, Mg 25 gr, Fe 4 gr, Zn 2 gr, Cu 0.2 gr, I 0.02 gr, Mn 0.01 gr etc.).

The "pool" of bivalent cations (++) - Ca, Mg, Fe, Zn, Cu, Mn, including bad guys Pb, Hg, Cd, Sr, will stay more or less constant, an excessive increase of Ca will have an impact on all of them (so Ca is an antagonist to all good and bad guys), but an excessive increase of Zn or Fe will not influence Ca, but only Cu, Mn, (maybe Mg) and all the other oligo-elements and micro-elements, so necessary for a healthy body.

The same is true for the "pool" of anions (-) - F, Cl, Br, I, will stay constant and a substancial increase of Iodine will have an effect on the other 3 bad guys, this is in fact the essence of this forum and poor Trapper is continuously challenged with this rule !

Idem for the "pool" of monovalent cations (+) - Na, K, Li, Cu+, Hg+, an excess of Sodium kills Potassium and Vulcanel is so right to insist on this.