[SoundUser]

Originally Posted by big fud

I took my koi to the koi specialist today as he had the same thing 2 weeks ago,I gave it a salt bath looked ok then yesterday evening he had a red tail finns and cotton wool over the mark on his side.

The shop gave the fish an injection and gave me some anti fungi and paracite treatment for my pond ill let you know how i get on as this is all new to me ..

regards
mark.

thank you... youll have to let me know what stuff you used

[big fud]

NT Laboratories BDS Fluke Treatment 250ml


B-D-S provides a tried and tested formulation which treats both skin and gill flukes as well as bacterial disease such as fin rot, skin flukes, tail rot and fish ulcers. The correct dose of NT Labs Koi Care B-D-S fluke treatment will treat bacterial fish diseases and does not affect the filter bacteria or plants. Koi Care B-D-S persists in the water long enough to destroy the various stages of parasite which may otherwise remain to re-infect the fish. Note: The warnings on the label and handle the product with care. 250 ml treats 9000 litres (2000 gallons)

This is what was advissed for my koi im not advising you to use it as im far from a profesionall buddy.But my koi had same symtoms as your's has.