Hello,
I have a sick koi that I need help to determine the illness and how to treat it. On one side, there is green spot (I think it's fungus). I've treated it PimaFix and it seems to take care of this issue. On the other side, there are a few scales that stick out. The fin is reddish looking and the eyes bulge out more than other koi in the pond. I appreciate any help.
Here are my pond parameters:
Pond size: 2000 gallons
Koi: 17 (they are ranging from 9" to 15", two 15", one 14", one 12", one 11", four 10", eight 9")
Filtration: Midi sieve and 4K Ultima filter, compact Savio skimmer, Savio waterfall, 4" bottom drain with air.
Maintenance: I clean the sieve once a week, backwash once a week, refill water after backwashing
Temperature: 57 Degree Fahrenheit
Ammonia: .25 ppm
Nitrite: 1 (I've added salt to protect the koi)
The last time I add new fish was on November 1, 2013.
I also want to mention that this is a newly constructed pond so I'm still trying to stabilize it.
I'm attaching some pictures of the problem areas.