So to give you a better idea of my system and uptake...also I do test iron, potassium( which is always a pain in the butt) and iodine about once a week usually every other. My system is a mixed reef(85g) 75g sump(50g of water volume) and a sps frag tank(30g) so about 150g total water volume system, and 2ml a day keeps my right on target, sometimes it drifts slightly low current I'd rather be a little under than over, bc when I do a water change itll get it back to where it needs.
I can say since dosing, that my tank has definitly shown more color, not so much in the acropora, but the gonipora expecially my pink ones glow. My zoas are all very intense colors now as well. My acros really have taken a turn for the better since I added the red sea reef nutrition to the mix. I dose 10ml/day for A and B. (Which is on the light side for a mixed reef) and it's already made a difference.