When i first set up my tank... i kept a salinity of 1.022, and the temp was at 77, i read an article about how the ocean is usually at higher temps, and salinities. So i decided to try it out on my tank, i raised the temp to 81 and the salinity to 1.026 and ive noticed that the fish have more of an appitite and they also became more active... thats just what ive seen personally about this issue