What to do, what to do...

[Harley]

So Harley has fin rot and I'm moving him into a QT. I just purchased Maracyn II as aquarium salt wasn't doing the trick. The Maracyn II box says to not change the water within the 5 day treatment period unless the water chemistry is bad. I've read here on several occasions that while in QT (at least for fin rot) the water should be changed everyday. Any recommendations?

[roadrunner]

Usually water changes are done before or after the treatment. I would suggest to follow instructions on the bottle carefuly or medications will not work properly.

[Harley]

Thanks for the help.