Columnaris Disease in Fish, Bettas, etc., Correct Treatment

[Carlrs]

http://www.fish-as-pets.com/2009/06/columnaris-disease-in-fish.html

Here are a few excerpts"
"The treatment and prevention of the Aquarium (& pond) disease "Columnaris" seems to be one of the subjects of more inaccuracies than most diseases commonly confronted by aquarists.
The thespruce.com (previously about.com) has an article that is rather basic without much information, and is generally accurate in what a fish with Columnaris might show, but otherwise does provides very poor/inaccurate information for treatment or prevention.
Sadly Google's terrible algorithm gives this poor article number one ranking

HERE ARE SOME QUOTES FOLLOWED BY CORRECTIONS/REFUTATIONS:

* "Maracyn is the most useful anti-biotic"

CORRECTION:
WRONG! Columnaris is a strictly gram negative bacterium while Maracyn (which is Erythromycin) is a gram positive antibiotic.

If the author of this article or anyone had any success with Erythromycin, this is proof that the disease treated was NOT Columnaris, rather a gram positive pathogen.
The Antibiotics that have proven gram negative effectiveness and will work best is somewhat debatable, whether a combination of Furan 2/Kanaplex (best when used 100% together as in the product AAP Spectrogram) , Sulfamethazine/Trimethoprim combination, Minocycline, or others, but you will NOT achieve success with a gram positive antibiotic such as Erythromycin!

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* "Columnaris is usually more of an ulcer than a white patch"
From Facebook Group "Fish Tank Enablers" (April 15 2018).

CORRECTION:
NO! In fact quite the opposite. Hence why Columnaris is often called "Cotton Mouth Disease" & "Saddleback Disease" (for the white saddle on the fish).
Ulcers are more indicative of an Aeromonas infection which might have some similar treatments, but often quite different causes and prevention
In the end, this person went on to treat with API Fungus treatment without anyone suggesting she correct the stressors that likely caused this likely case of Columnaris (not fungus nor Aeromonas as this was a classic case of "Saddleback disease", aka Columnaris (see screenshot below).