Specific gravity

For a FOWLR specific Gravity is fine a 1.022....
Coral's and Invert's within a range of 1.024--1.027...
Are fish okay in the range of 1.024 - 1.027?
Or are there just certain fish that are okay in the higher range?

 

You'll be ok. I keep mine at 1.026.

90G SW, 125#LR, corals, fish.

 

Before I had my refractometer I had my fish and reef around 1.030 in error. I never had any issues at all. I had to slowly acclimate everything down to 1.026, where I knew it was better . Clowns, tang, mandrian, never got sick or showed any problems. Corals really loved that high sg though. The hammer was adding new heads quickly.

 

You'll be fine. Just keep it consistent and stable. Several critters are sensitive to SG swings.

 

It is at 1.023 now. The tank is full to the brim so if I just let it evaporate and the SG gradually increase to a 1.025 there shouldnt be any big swings that would harm the fish?
I had an anemone and the LFS said to leave it at 1.022 but he never seemed happy or healthy. THen a slug killed him. So when I get another a higher SG would better for the anemone? and some corals? I am going to back off the fish with just a couple percula's.
I like the coral idea more.

 

I generally keep my SG at 1.025. Somehow my SG is now at 1.022 and my anemone is not liking it at all, tentacles are stubby and the face is starting to bleach. I'm slowing trying to get it back up to 1.025 to see if it helps. I need to feed it more, my maroon clown has been neglecting her duties of feeding her anemone the last couple weeks since I added a mate for her, but that's a whole different issue.

 

What would cause your SG to drop?

 

Over time, salt creep. Also, every time you put your hands in there, you notice how they get all crusty later? You're pulling salt out each time. These methods wouldn't be pulling out a ton of salt, but over time...

 

Just remember that if you top off to the brim again it'll be back to 1.023. Each time it evaporates down and gets refilled it will have a swing. If the water level is where you want it when it's at .025, then fine.

I don't know why, but every LFS I've ever been to that I've asked recommends 1.022.

 

if you within the 1.02 range your fine, the ocean varies in salinity.