High salinity level mistake

cyberCoder

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Hi

I finished first fish's 30 day quarantine, and moved on to the second one. Right after I moved the second fish into quarantine on Friday night ( May 17th ), I noticed that this one moves a lot slower. It enjoys hiding at a corner a lot. This morning, I woke up and saw the fish almost "sleeping" on the bottom of the tank, and I thought it's going to die. Somehow, I decided to recheck all the parameters again, and ammonia is 0 ( i have the floating alert on too ), nitrite is 0, and nitrate is 0.5 - 1. The terrible parameter is salinity, it was at 1.028. I had no idea what happened since the water was new after my previous 30 day quarantine. I immediately replaced some water with RODI, and brought the salinity to 1.025.

I attached a short video of the fish. So the fish lived very likely in 1.028 for 2 full days.

Is that going to be ok? I can't imagine that I made such a simple mistake. Hope it's going to be ok.

 
Higher salinity won’t cause issues. Sudden changes might.
 
Should be ok. I would stick an air stone or get good flow at the surface. The higher salinity dropped the oxygen saturation. They should be fine since you dropped it but a little fresh air can’t hurt
 
Thank you! just put the air stone in, i have one in the filter chamber on the side ( it's a built-in filter for 12 gallon ). sounds a good idea and I put the other air stone in. In general, this tank's PH is lower at 7.9, while the main tank is 8.2-8.3
 

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