Help please!!!
 

I just picked up a small blue tang and acclimated him for a few hours before adding him to my tank. He seemed great during this process. I iadded him to my tank and he swam at the very corner for a few hours so I thought he was just getting used to things. I thought there was too much flow for him cause he was so small so I turned off one of my powr heads . He swam down but keeps floating to the top. He really has to fight to stay down. Can anyone help me and let me know if theres anything I can do, He doesn't look so well and I don't want to lose him

How big is your tank. When did you start up your tank

My tank is 90 gallons and it's been up fo about a month I used rock from someone elses tank that was well cured went through my algae growth and diatoms I also went through the ammonia spike and all my levels were good so I added the clean up crew and then the fish. The other fish are fine and going to do a water change and see if that helps. He's really small though only about the size of a quarter

What is your ammonia reading now, your salinity reading and the temperature?

What is the Salinity of the tank?

Salinity is 1.024 temp is 79 and ammonia is zero but my test kit is older and could be wrong....

could it be a swim bladder problem?

Your tank has likely not cycled and your tang is suffering.
Do a water change if you have salt water prepared but do not do it suddenly. Turn your powerhead on as well. and place it near the top of the water line.
If it is ammonia the water change will dilute it and the powerhead will add oxygen to the water.

Not likely as the problem you are having occurred immediately when you placed the fish in the water.
You need to get a proper test kit. Don't add any fish until a month after your tank cycles and one fish at a time per month.

Your rushing things will cause you lots of problems. Please be patient.

Just noticed you have more fish in the tank? What do you have and when did you add them?