I am running the BRS 2 part Tropic Marine Balling system. It has the trace elements but according to the ICP, I have too much of some and not enough of others. The good thing is, I see my sodium is not elevated, despite dosing 200 ml of both alk and calcium. So the sodium chloride-free salt additive seems to be working.I use BRS kalkwasser and BRS 2 part for my calcium and alkalinity. Infrequently, I’ll add BRS magnesium supplement (combo of magnesium chloride and magnesium sulfate). Everything else is supplied with daily 1% AWC.
I use GAC passively (1/2 cup replaced every 3 weeks). No filter socks and medium skimming. I think that’s everything I do. I did a couple ICP tests a while back but never changed anything based off of their results, so I stopped.