Fish dying help!

[kalinowskiz]

I have had two fish go down on me the past week and a half first was my blue tang who out of nowhere started acting crazy swimming upside down crashing into rock and heavy breathing. He died within 24hrs of this starting and then the same thing just happened today to one of my clownfish same exact symptoms that led to death. I have tested ally water:
alk is 11.2dkh
Calcium 501
pH 8.1
Mg 1280
Nitrites 0
Ammo 0
Nitrates between 40-60ppm (ongoing battle but coming down now with carbon dosing)

I thought it was just a sick individual fish but I am starting to think I have some parasite in my tank since it spread to my clown. All my Coral seems healthy and unaffected by this. Please if there are any recommendations I really don’t want to lose my whole tank to this.

 

[Flippers4pups]

Have you tested for stray voltage?

 

[Big G]

Heavy breathing is a concern. Consider trying a freshwater dip to see if flukes are the problem and if it is something more sinister like velvet that can strike unseen within the gills without the usual velvet sheen/spots on the skin, it will remove a tremendous number of the parasites from the gills allowing the fish to breath easier and it will then buy you time to setup a QT to treat with copper/CP is necessary.

Freshwater Dip

Freshwater Dip What It Treats – Provides temporary relief for a wide range of diseases: 1) Marine Velvet Disease (Amyloodinium ocellatum) 2) Brooklynella hostilis 3) Uronema marinum 4) Flukes (Monogeneans) 5) Black Ich (Turbellarians) Can be used to confirm the presence of Flukes (see video...

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