Correct but alot of reefers just leave the ammounts up to the salt and then that ammount becomes depleated in a matter of days
If you do a water change on Monday then the elements will dimish by the ammount of corals you have in the tanks.
Do we really know we should not be dosing. That is why when Jarret said to me o you have extentions all the time and full in the tank, I was already dosing elements into the tank and now I am reading futher into this.
You can dose but you have to make sure to dose the correct ammount.
For example lps use up Strontium in the tank alot more then sps do. Strontium is one of the key factors in the growth of lps coral
"Many LPS corals require moderate lighting and water flow and are easier to care for than SPS corals. Feeding microplankton and brine shrimp is escential for many LPS corals survival especially goniopora. They also benefit from calcium, strontium, and other trace elements" Taken from reefkeepingfever.com Lps coral growth.
This goes much futher down the rabbit hole then just your normal cal reactor shooting out trace elements into the tank.
Pick up a bottle of esv 2 part and read what it is made up of. Not straight cal or alk. You will be supprised to see what you find.