Originally Posted by Mackmaven
the fish will be fine, CO shouldn't get into the water that easily and there's no way you'd get the saturation up enough to deal the fish any lasting harm.
I kept piranhas and planted tanks all through college smoked near them all the time and nothing ever happened.
Dude! Your school let you keep piranhas? Our school's rule was "NON-carnivorous aquatic pets -- if it can't survive for 24 hours completely underwater and survive on plants, you can't have it". No turtles, newts, piranhas, or even stuff that ate shrimp. It sucked.