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L,
excessive muchus and flashing, maybe fluke, only a microscope will tell. The quick checklist :
- large % water change lately ?
- change in water quality ?
if you want to shotgun whatever is bugging your koi, I will say QQQQQuick-Cure + fenbendazole. QC runs $60 in a few places, and still work in Norcal today, and for the next few days, fenbendazole runs $90 for 300g, doze it @2ppm. The protocol, calculate you pond volume, covert it to L, then gram of fenben, give it 10% extra. So, for 7500g pond, you are looking at 60 g fenbendazole.
How to do this the easy way :
find a plastic container with cap, put on kitchen glove fill with about 1" of water, in goes fenben, then QC. fasten cap. hold and submerge the container in you pond, shake the hell out of it for about 10 minutes, pour the mixture into you pond. No water change for 10 days, but 7 days is usually enough.
WHere to get fenben :
4 fish stuff dot com.
hope that help.
stan
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