inserting a shout out to all the nano and pico reefers who are salt parameter independents. Doesn't matter what salt we use, since we do weekly water changes they all work out, literally all of them. My own 12 yr pico just went from 7+yrs straight Kent, to Oceanic with a 100% water change, then to Fritz the next week with 100% water change, and back to Kent now. I don't mix my own water, and the LFS I used closed and the other startups around town were sustaining me.
We wont see much salt preference issues in the smaller tanks, cuz it doesn't matter. same sps loading too as the large tanks.
the smaller the system, the less the salt mix matters.