In my last "pappone" i've put nori algae and sardinias too. Some people, here, use to put nori and sardinians in a sock in the sump. It seems that work good, put it's very polluting
I have Ca 420 (i think that higher is not necessary), 8,5 Kh, Mg 1250, ph 7,8 /8.
For corals i use H&S...