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It might be ick, an infection of the parasite Ichtyopthirius.% ], H" i! p# D- V8 C0 D) R/ C
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You 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.' `: F; Z7 R; \, [4 d# T6 m
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It might be hard to keep all the infected fishes, but treatment is necessary to protect uninfected ones.3 J2 @! _9 h, t- [. `+ A
. J. w3 a8 e* s" q1 X0 xBy the way, is it necessary to have >20C for koi and goldfish? |
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