What fish do not tolerate hypo salinity? Need help

[DrewBrees713]

I lost a candy hogfish, royal gramma, and a YT in 2 different QT tank. When i brought them home i acclimated them slowly over the course of at least 3+hrs to 1.09 salinity please helppppp!

 

[Crabs McJones]

I think some wrasses and the Copperband Butterfly fish don't do so well in hypo. @Humblefish @Big G do either have a list of fish that cannot tolerate hypo?

 

[Humblefish]

I lost a candy hogfish, royal gramma, and a YT in 2 different QT tank. When i brought them home i acclimated them slowly over the course of at least 3+hrs to 1.09 salinity please helppppp!

What was the starting salinity? You need to take a lot longer than 3 hours to drop most fish down into 1.009.

 

[DrewBrees713]

I forgot to check the salinity in the bag. The YT was doing fine , ate for about 5 days. The other dint eat and lasted about 3 days.

 

[Humblefish]

I forgot to check the salinity in the bag. The YT was doing fine , ate for about 5 days. The other dint eat and lasted about 3 days.

Did you test the pH? As salinity drops, so will the pH of the water and you will need to continually buffer it with "baked" baking soda.

Another problem with hypo is it doesn't treat, but may mask symptoms of, Marine Velvet Disease: https://www.reef2reef.com/threads/velvet-amyloodinium-ocellatum.217570/

 

[DrewBrees713]

Well according to alot of people online, its ok to lower salinity in a short period of time but to increase salinity it must be done gradually. I was going off of that and thought itd be safe and dint look into ph