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if I remember from my days working at a pond store the pond melafix is just a higher concentration of the medication and therefore just treats more water. However melafix isn't that effective against most salwater bacterial infections. I like to use a combination of furan-2 + kanaplex.
but yes it can be used in saltwater
Can't argue that, it is also a lot more forgiving a coworker once added almost 10x as much as what was recommended with no ill effects on the fishThank you, I always keep furan2 and kanaplex on hand but I’ve had good results with melafix for minor things.

