I'm hoping the salinity you gave is a typo. 1.23 is WAY too high. You probably mean 1.023, which is lower than it should actually be. Natural seawater is 1.0264.
Reef Aquarium Water Parameters by Randy Holmes-Farley - Reefkeeping.com
"Ron Shimek has discussed salinity on natural reefs in a previous article
. His recommendation, and mine as well, is to maintain salinity at a natural level. If the organisms in the aquarium are from brackish environments with lower salinity, or from the Red Sea with higher salinity, selecting something other than 35 ppt may make good sense. Otherwise, I suggest targeting a salinity of 35 ppt (specific gravity = 1.0264; conductivity = 53 mS/cm)