Need help

[tenshi]

did you turn of UV when treating? and no carbon?

Yes

 

[christinna77]

Do you have any powerheads in your tank pointed at the surface to provide enough oxygen exchange? Do you notice any signs of disease, like heavy breathing, not feeding, swimming against the current, etc.?

You can record a 30s video of the remaining fish under white bright lights and post it to our fish disease forum for the medics to take a look.

I have 2 jebao sow8 at top and 2 nano circulating from back n bottom yes I noticed them scratching and hanging near wave makers but the 2 tangs also stress fast n bad fox face n hippo swimming great eating very good good breathing

Depending on how fast the fish are dying, you could have an active velvet outbreak. Post your findings including the video here: https://www.reef2reef.com/forums/fish-disease-treatment-and-diagnosis.771/

 

[tenshi]

did you turn of UV when treating? and no carbon?

"the past month and a half my tank has been stuck in its nitrite to nitrate stage"......

Not sure what you mean as thats the normal stage...

It’s running high nitrites and not converting to nitrates