I don't think the fungus acted as a wound sealant, and I don't think the Protozin caused this problem to worsen, really.
If she were in organ failure already at the time you dosed with Protozin, one
might deduce that the Malachite green, Copper and Formaldehyde in the Protozin could have further stressed kidneys that are failing, but I really don't see signs of dropsy, i.e., pineconing of the scales.
Theoretically, her kidneys could have been in the early stages of failure, before outward signs, and therefore the Protozin could have affected her adversely, just as any medication might stress the kidneys, but I'm thinking her condition is worsening due to either infection or DGD, so please don't think that you are the cause of her problems. You're doing everything possible for her.
The popeye is obviously due to pressure in the head area, but this can be from infection, and usually is.
If Lucy is still eating, a medicated (for bacterial infections) food might help if we could get it.
I've read some information in an article by another fishkeeper that had some limited success with Kanamycin Sulfate.
Do you see any red blotches, or streaks on her body? Look at the base of the dorsal fin or at the base of the caudal fin. Fine red lines in the tiny bones or "fin rays" of the fins, or redness under the surface of the skin where the pectorals attach to the body. These are signs of septicemia, which could be a possibliity, here.
Septicemia is very serious and needs to be treated immediately with antibiotics if we could get them. I don't know what antibiotics are available.
Sorry it took a while to post, I've had a lot of interruptions here.BTW I'm not Brits (as you can guess from my English
) I'm Italian. Today 12:41 PM
"BTW I'm not Brits (as you can guess from my English )
I'm Italian."
ps: Fabio Bruno... definitely sounds Italian.
Didn't know if you were an Italian Brit, or an import, lol.