You're comparing apples to orangeshuh?
my 3 month old 40 breeder with a half dozen small SPS frags and 3-5 small LPS frags (all around an inch) consumes about 0.25 dKh per day. I’ve got no visible coralline growth and as they’re all relatively new (< 1 month) only 3 of my frags have noticeable growth.
if I left it go a week, it’d swing about 1.5 dKh. My 10% weekly water change only adds 0.8 dKh.
I went from dosing 5 ml/day of AF component 1, 2, 3 to dosing 30 mL/day in about 2 weeks. And rate of consumption has been increasing daily.