Coloration during healing

[berkokid]

Had a koi with some red streaking along its sides and a small ulcer. Microscope broke, didn’t know it. QT’d and used some iodine and debride on the ulcer, then proform-c treatment using standard protocol. Koi now been in elbagin salted to .5% for 6 days at water temp ~ 77-78 degrees.

Ammonia: zero
Nitrites: zero
Nitrates : < 5ppm
kH: 120

I’ll replace the microscope. But question, the redness went away almost immediately with the proform-c treatment and the areas that were red turned a muted brownish-grayish. Is that a sign of healing?

There are still some signs of stress, redness in fins.

[graybird]

Hard to say without a picture, and it's not clear to me whether you mean the ulcer or the fins when you say the areas that were red are now brown-gray. Healing skin is normally white, but it's possible you have some discoloration from the Proform and/or Elbagin. Proform is blue-green and Elbagin is yellow, so those colors would combine to form something in the green-brown family. If you're looking at the fish in water with Elbagin in it, it's like looking through a yellow lens, so keep that in mind.

That being said, I would watch VERY closely for any greenish fuzz, which would indicate saprolegnia fungus. Keep the water changes up and the temp up, and you should see good results.

[berkokid]

good feedback, thank you. here are pics.

the signs of remaining stress


the affected area (this whole area was angry red a week ago)


the one area I identified as still being a bit surly ... which I swabbed with iodine again.

[RichToyBox]

Appears to be healing nicely.

[berkokid]

any general thought as to how long I should keep the koi secluded in QT? should I keep the elbagin / salt treatment going for another week?