It actual fact it can happen over night and did! I watch my fish for at least half an hour a day and check them at every feed. I have found many sources that also state that it can happen over night.
Please take some responsibility for your mistake and stop making up stories. If pineconing happens overnight without prior warning then why the hell are they selling Maracyn2 to treat dropsy??? Can you grasp that concept???
Why don't you just go out and buy another "prettier" one and be done with it? Why post here to cover up your negligence?
Just becuase Maracyn2 has the stuff in it to fight dropsy doesn't mean it has the time/big enough of an effect to. These aren't stories. A lot of people on here notice pineconing overnight and why don't you graspt the concept that everything you say isn't right and its pointless to get all "this this bacteria is blahblah pathogen blahblah " on us when clearly, its not us who needs to grasp some concepts
You are just handwaving to avoid the issue. Have you used Maracyn2 to treat dropsy? If you haven't then you can't talk. All you're doing is reading some stuff on the net and accepting it as gospel without firsthand experience. Dropsy doesn't start when you see pineconing, it starts when you see the fish start to get big/round.
Negligence is negligence whether you call yourself a "fish mommy" or Volume Fish Seller.
I work at a high quality, small, locally run LFS, and unfortunately fish often come in from the transshippers/wholesalers in less than ideal states, and dropsy does pop up once in a while. We treat for any illness or injury that occours (and have nursed some really sick animals back from the brink), so yes I HAVE tried Maracyn2 to treat dropsy, in various species of fish, from bettas to koi.
By the time the disease is evident to the casual observation (the rough bloated look that preceeds true pineconing), Maracyn2 doesn't work. At all. Ever. Neither does any other preprepared medication on the market that claims to treat dropsy.
The only success I've ever had curing dropsy in even its earliest visible stages is with epsom salt baths and a heavy dose of Indian almond leaf in the water the rest of the time. The success rate is still frustratingly low, but it's lightyears better than the stuff that's sold to do the trick.
And they sell it because they can. There's not nearly the type of regulation on animal medications that there is on human ones, and a lot of pet medicines on the market don't do what they say, or they do it incorrectly or too well (for example, a couple particular brands of cut-rate cat and dog flea medications use a strong pesticide that is notorious for not only killing the fleas, but the animal being treated, and so far only one of the handful of lethal brands has been pulled from the market.) I don't trust packaging of human medicines to do what they say without doing looking into them on my own, and I trust the packaging of pet medications even less. "The package says it does" is NEVER enough proof for me.