What is this?

[jwowoski]

I found this on my RTC hybrid today. What is that? I thought maybe a burn? Or attacked? Or maybe a disease?


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[thebiggerthebetter]

I'd suggest to do a forum search on flesh-eating bacteria. It may not be it but it is good to be aware of what it is.

 

[Rocksor]

Looks like furunculosis. Treatment is dependent upon the ph of your aquarium.

Erythromycin, Furan-2, Nitrofuran are best used in a ph of below 7.5. Triple Sulfa or Kanamycin works best in a PH 7.5+.

http://www.fish-disease.net/diseases/furunculosis.php

http://www.americanaquariumproducts.com/vibrio_aeromonas.html