Scaleless fish safe fungus treatment

[lomeli562]

I have a 55 gal tank with a black moor goldfish, comet goldfish, two murray river rainbow fish, two plecos (under 6 inches), a mystery snail and an african featherfin catfish. Im wondering what medication i can use to treat the entire tank without harming any fish. It has spread to all but the catfish and i want to be sure it will be okay. ive made the mistake of using too strong a medication and killed a pictus catfish i had before. Any and all advice will be greatly appreciated thank you!

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[Delapool]

Can you QT the catfish maybe??

That's a lot of fish to go down with fungus. Is it fungus for sure? Do you know what caused it? If unsure I would be inclined to hedge my bets and treat with something like tetra fungus guard which covers bacterial (furan 2) and fungas.

 

[lomeli562]

Id have to set up my 10 gallon but im not too confident in its ability to hold water it originally started on the black moor and i treated her but i must of missed some of it and now eveyone and yes its fungus its not small it spreads like a thin sheet i can try to upload some pictures if they can stay still long enough

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