Anna Robinson
Fish Fanatic
Melafix is an antibacterial treatment as well as a precautionary/healing medicine. But if it's not working, perhaps antibiotics are the next step? It does look like a bacterial infection.
If the water stats are fine, and you're not planning on using a medication which could affect the other fish, I don't think hospitalising the shark would help, as it would just stress her more to move her.
If the water stats are fine, and you're not planning on using a medication which could affect the other fish, I don't think hospitalising the shark would help, as it would just stress her more to move her.

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