bettachick49
New Member

Amanda
Yes it can it goes along the back of a fish going down the sides of a fish to form a saddle, it's called saddleback columnaris, sounds like you really have a bad strain of columnaris in your tank.
There is an antibiotic called tetracycline which you can add to the tank, but it will wipe most of the bacteria colony out in your filter.
Tetracycline
Manufacturer: Aquatronics
A broad-spectrum antibiotic used in the treatment of gram-positive and some gram-negative bacterial infections. For infections of fin and tail rot, frayed fins, popeye, inflamed gills, mouth and body open sores/ulcers, livebearer disease, dropsy, Columnaris, and secondary infections such as fungal. Specific for livebearers and goldfish. Aerate the aquarium well when using. Useful for the control of some common bacterial diseases, including Aeromonias and Pseudomonas Genera and the Mysobacterial group.
It's going away then thats a good sign, just leave the ph they will be ok with it, what other fish are in the tank, as if you have no scaless fish you could add some salt to the tank.
Right leave the ph alone as it could kill her messing with it, it could be the meds altering it, if she get well though you will have to climatise back to her own tank ph.
For the salt, table salt usually one tablespoon to 5gal, so if its a ten gal tank just add a tablespoon for now, best off gradually adding salt slowly over a period of time.
No the salt will do her good, plus columnaris hates salt, don't mess with the ph, as she will be climatised to is now, as it will stress her and could kill her.
Makes no difference table salt is fine.