In a fish only, the lower salinity is better, so I agree with those numbers....1.021-1.023, however with
Corals then we need 1.025, or with SPS dominant 1.026, one aquaculture claims 1.027 for SPS.
Temp again depends on where your corals came from, some of the Austrialians like Scolymia come from slightly cooler waters, but 72 would be to low IMO.....maybe 76.
Since my corals are mixed locations, Indo and Austrialian, I stick on 78 with variance of .5
Like gold locks, not to hot, not to cold.
But stability.....IS EVERTHING!