Nuts! I thought my prized kohaku (2nd pic from the left in signature) was healing well. It developed early stages of ulcer. Scales lifting and redness. Treated it with debride ointment. Was working great two weeks in until yesterday. After treatment, infected area stayed white with hint of red in certain areas. Yesterday, saw some redness and now it's redder. Treated it again. I'm putting it in the 130G QT in the next hour or so. :-(
Here's pic of first day I brought the guy back home... Spotted infection 3 weeks later I think. It developed FAST! I did a bowl inspection on the guy a week before... NOTHING! This pic was taken on day of discovery. I don't have current pics. It looks worse. I removed some lifted scales, treated with iodine and debride ointment for 4 days. Fed my entire pond with debride medicated food. Looked promising. Infected area stayed white with a little bit of red until yesterday (2 weeks after discovery). Started up debride ointment again. I'm running really low on it but i should have enough for 3 more treatments.
All the stuff I've done with ulcers so far is useless. I hope moving to my 130G QT will work. The filter is matured and water parameters perfect, but orange doitsu died in there. But that water is 100% gone. Moving my domestic koi out of 130G again and into garbage bins. Sorry guys. But they're tough, and I couldn't even find a single fluke on them.
I'm going bonkers treating koi. Looks like the rest of my herd is fine, but if they develop something... god forbid! They and I suffered enough. I don't want to add another red X to my sig line. Only green, meaning it got traded. LOL!