red stuff on koi

[that 1 guy]

i just notice 2 day that 2 of my kois have r kindda getting read on them

like around this ones mouth
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and by this ones eye
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does anyone know what it is r how 2 stop it from spreading??

[cocoa_pleco]

1st one is mouth rot, and if the white koi's eye is protruding, its popeye. how is your water quality?

[that 1 guy]

i dont kno i dont have anything 2 test the water

[cocoa_pleco]

i dont kno i dont have anything 2 test the water

thats a problem, you need a test kit

[that 1 guy]

is there any way i can cure him wit out one?

[cocoa_pleco]

do a large water change and add anti bacterial medication