Koi eyes covered with growth

[Halfmine Penny]

We recently got seven beautiful koi from someone moving from their home. All but one looked very healthy so we added them to our large pond. 30,000 gallons.
One of them, which I have been keeping in a quarantine tank with 0.28% salt, has a waxy looking spot on its side and smaller ones on head and dorsal fin. I think koi pox? I noticed yesterday that both eyes seem covered with greenish growth. Not sure if it’s pox or something else. Attaching photos.
The pond they came from didn’t seem very clean.
We are in Reno, Nevada and the pond water temp is getting close to 40 degrees F. Quarantine tank is in 60 degree range since it’s black and above ground.
Any ideas.

 

[j.w]

@Halfmine Penny
I'm not that good w/disease on fish but there is such a thing as Koi pox. Hope someone will be able to let you know what it is for sure.

 

[Halfmine Penny]

Thank you. Me too

 

[GBBUDD]

Coming into winter is much HARDER TO BE SURE you got the problem solved. as most parasites or bacterial infections will lesson just due to the cold. making it harder to be sure they are ok to go to your pond but I would not add fish to a 30000 gallon pond without all being quarantined. if they should contaminate the pond it will cost a fortune to treat 30000 gallons.
sorry from the pics i cant help

 

[Lisak1]

I agree - very hard to tell from photos. I'd honestly rather sacrifice one fish than to contaminate a whole pond. Good for you for taking the precautions to quarantine first.

 

[Mgessert]

The waxy growths may be koi pox, but the greenish layer on the eyes is probably something else, either injury or infection. How are they looking now. Is it eating?