alk vs salinity?

[146clark]

Zeovit says a dkh of 6.5-7.5 because you want as close to nsw as possible. It is also stated that a higher dkh could potentially cause unwanted rtn, stn. Personally I've seen people run 6.5 and have beautify sps reefs while others run 12 dkh ( non zeo)and are just as nice. I have run systems at 9 dkh aswell and worked great just wondering about salinity in the 1.023-1.024 range for coral health really. I believe that as long as the alk cal mag and other crucial parameters are in line thing should go as norm? I was under the impression that lower salinity would also alow for more o2 saturation in the water column but could be wrong.