salinity questions for long term reefers

After a few weeks of research I was still not happy with my findings...

I am trying to understand Salinity in a aquarium.

Why do LFS keep their salinity lower? (reduce or slow parasites etc?) What do they target for sg? Should we be doing the same if we are isolating or medicating a fish?

FOWRL vs. Coral Salinity How much impact does it have on our systems.
Some say 1.019-1.028???

How is the ideal salinity determined in a tank?

What is the impact of higher and lower salinity in tanks to the fish, coral and inverts?

 

Most LFS shoot for 1.022 some coral reefers go for 1.024-1.025 Just that some animal's and coral's and coral do better in the higher range. THe LFS is only temp housing why they are so low I do not know. I was asked to stay at 1.022 during the cycle now it is through and I am going to get some corals (limited for lighting) so I will readjust it to a higher salinity. It just depends on what you keep I guess.

 

K.I.S.S.

I keep mine around 1.024 or 5 regardless. Of course, mine is measured with a Hydrometer which I'm sure I'll get flamed for. *Shrug*

...Actually, I can't even remember the last time I checked my salinity, to tell you the truth. Unless fish are dropping off like flies or my corals aren't acting right, I assume everything is dandy.

 

SG varies greatly from tank to tank, from situation to situation. The lower the SG, the less disease there is (as has been pointed out). In a reef, you should keep it around 1.025 as that is what corals seem to prefer. There are those who keep theirs around 1.028. I aim for 1.026-7. Right now, my SG in the 90 is riding at 1.024 (it decreased for some reason.....salt creep I guess. Major salt creep. My 10g, when I tested it here recently, was 1.030. Oops. I decreased that to 1.027. The clowns didn't seem to notice.

 

1.023 to 1.024 is what I'd shoot for average ocean levels are 35ppt or 1.024 little never mentioned fact about hyper salinity is most over look the fact that fish excrete kidney waste and many gases as well as up take drinking water via osmosis and lowering the salinity will limit that process . Humans can live at higher altitudes also but its very stressful and limits their daily activities and effects many of them health to the point of death in some cases . Never understood those with a sick fish to use this to cure them of a simple parasite . Like burring the dog fur because it has fleas and the flames will kill the fleas LOL .