Help! I did an accident

[Alx384]

I forgot to put dechlorinator in the water that I used for dip my betta in methylene blue, what should I do? He has fungus I treated him with salt and it didn’t work

 

[Brookster123]

Take it out of the untreated water or add dechlorinator??

 

[charliebankston]

Take it out of the untreated water or add dechlorinator??

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