But....how many Reefers don't dose at all given the expense, potential toxicity, and all the unknowns. And just do 20% water changes bimonthly. With good mechanical filtration and chaeto.
I come across more reefers that don't dose trace vs those who do, but who knows the actual statistics. If you do routine water changes you'll get your trace, but as mentioned, I don't do water changes and i've seen zero impact on my system from dosing trace vs not. I don't think theres enough data to substantiate concrete evidence of corals needing such trace elements to survive/thrive. Like I said... peace of mind.