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It might be ick, an infection of the parasite Ichtyopthirius., `5 E* B1 g, {8 a- \( o, L$ f
k" b3 t+ Z" F+ ^) U9 jYou can increase the water temp up to ~28C and give them drugs (basically Cu2+ ions), plus large quantity of water change. Google for further details.
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, C; G* [% }4 m, q( X/ UIt might be hard to keep all the infected fishes, but treatment is necessary to protect uninfected ones.
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By the way, is it necessary to have >20C for koi and goldfish? |
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