it is probably columnaris, but even if it isnt you might want to try potassium
permanganate treatment and then use some antibiotics in the water, and/or feed some
antibiotics.
http://weloveteaching.com/puregold/d....htm#POTASSIUM
how big is this fish in the 20 gallon? I kept my koi in the basement in 100 gallon
stock tanks all winter one year. with a gravity filter it is doable. Ingrid
"Beer Rock" wrote:
One of my metallic Koi was looking slower than normal so I've netted him &
he's got a bad dose of fungal infection. I've treated & isolated him (in a
small 20 Gallon plastic box) & treated the pond.
He's through the 1st night but the rot / cotton wool has got to a lot (30%)
of his scales.
Question is, how long before reintroduction - is this a period of days,
weeks or months. Do I wait until he's 100% back on track with all signs of
infection gone, or will the isolation stress him out even more? What about
repeat treatments?
Thanks
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