Goldfish gill infection?

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jtwalls

Aquarium Advice Newbie
Joined
Feb 2, 2013
Messages
4
I have a comet that is 6 years old and has some type of growth under his gill. The other side is fine. For the winter, I keep him with 3 other goldfish (much smaller) in a 100 gallon tank with a light and submersed sponge box filter for a pond. Anyone have any ideas as to what it could be or what to do??

All aquarium levels check out fine. The water was just changed 75% less than a week ago.

I appreciate any advice! Thanks!!

https://picasaweb.google.com/106201962042693271677/FRED#5840466569263887650
 
I think you already posted this and i reply'ed on you're other thread. As i said, i think it's slime disease.
 
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