Mike,
As Andrew mentioned, the Trace Element Debate is ongoing and results are inconclusive, as far as I can tell. This debate centers around 3 principal issues:
1) Are supplemental additions necessary at all with a good salt mix? There is some subjective info that suggests yes; some suggests no.
2) No one knows for sure what the correct dosage should be, if at all. Hobby test kits are not accurate enough to tell if you have the correct level even if you know what it is.
3) Too much of almost any of these elements can be harmful not only to corals but fish and inverts.
I do think it unwise to begin adding trace element solutions or any other additives to a new setup. Water changes; Kalkwasser/and/or/B-Ionic or other 2-part Ca supplement; food (with vitamin supplement such as Selcon) should provide all your tank needs. While the tank is maturing and in the early stages, the number of corals
should be relatively low and the corals normally on the small side.
Once a tank has matured and has a good population of corals, the reefer, having read all the "expert's opinions" can then make up his/her own mind.
Dick