nmonks
A stroke of the brush does not guarantee art from
Commercial molly breeders raise them in brackish water, period. So the idea they're "used to freshwater" isn't really tenable. As Annastasia says, while they will do well in freshwater, they do better in brackish. Black mollies in particular do astonishingly well in fully marine conditions, and they are often used to run-in new marine tanks because of this.
If your mollies are fine in freshwater, it's almost certainly because you have hard, alkaline water. When the pH is 7.5 or more, then mollies tend to do okay in freshwater. As soon as you try to keep them in neutral, or God forbid, acid water conditions, that's when they "get the shimmies". And fin rot. And fungus.
I can't think why you had problems with setting up a brackish water aquarium; true brackish water fish are very hardy. You will get problems adding brackish water to a tank with neons and Corydoras and angelfish, but that's not really the fault of the brackish water... most freshwater fish don't do well in brackish water, and some die quickly if kept in it for too long.
Cheers,
Neale
If your mollies are fine in freshwater, it's almost certainly because you have hard, alkaline water. When the pH is 7.5 or more, then mollies tend to do okay in freshwater. As soon as you try to keep them in neutral, or God forbid, acid water conditions, that's when they "get the shimmies". And fin rot. And fungus.
I can't think why you had problems with setting up a brackish water aquarium; true brackish water fish are very hardy. You will get problems adding brackish water to a tank with neons and Corydoras and angelfish, but that's not really the fault of the brackish water... most freshwater fish don't do well in brackish water, and some die quickly if kept in it for too long.
Cheers,
Neale
It something like... If they come straight from the wild, then they are best in brackish water, if they come from you petstore, they are probably sooooo used to freshwater that they will strive in it just fine!!!... yeah a conversation on something like that. I only had problems when I tried to make the water brackish so I just left it and it has been fine since!!!