I'm not going to point out and address the first sentence of your post, as we all know it was a rude thing to say.
I did want to point out, in case anyone was confused by your post, that aquarium salt, in this instance, would not have been the "magical cure" in this particular case. This was a parasite issue, not a "bacterial disease". I can only assume you missed the part of doggyhog post where she stated that there was a worm
in the lump. Metronidazole would have been the medication to have been used here, not salt. Even had metro been used it may have been too late anyway. These things sometimes happen, despite the best care we can give.
Doggyhog, I am sorry
you lost your betta.
as for aquarium salt suggestion, i asked if he/she used it or not, didn't told him/her "you should have used aquarium salt for that parasite", did i? i think not. so you misinterpreted what i was trying to say, not me. nor did i stated it's a magical cure for Betta's that are effected by parasites, You Madam, Not Me?
ok so if that's clear, he/she stated, he/she has 11 Betta's left. so maybe my suggestions were toward the ones that are still alive and not the one that's dead? Salt DOES prevent a lot of Bacterias that can grow in freshwater. and every disease that is known to effect Betta's are all very much related. where i got this intel from? well not by asking any fish owner or professional Betta breeder or not because i am a Professional fish keeper. it's a general basic scientific knowledge i picked up reading an article about "Water Microbiology", i copy pasted 2 last paragraphs that states the advantages that salt water have over fresh water.
"A variety of microorganisms live in fresh water. The region of a water body near the shoreline (the littoral zone) is well lighted, shallow, and warmer than other regions of the water. Photosynthetic algae and bacteria that use light as energy thrive in this zone. Further away from the shore is the limnitic zone. Photosynthetic microbes also live here. As the water deepens, temperatures become colder and the oxygen concentration and light in the water decrease. Now, microbes that require oxygen do not thrive. Instead, purple and green sulfur bacteria, which can grow without oxygen, dominate. Finally, at the bottom of fresh waters (the benthic zone), few microbes survive. Bacteria that can survive in the absence of oxygen and sunlight, such as methane producing bacteria, thrive.
Saltwater presents a different environment to microorganisms. The higher salt concentration, higher pH, and lower nutrients, relative to freshwater,
"are lethal to many microorganisms." But, salt loving (halophilic) bacteria abound near the surface, and some bacteria that also live in freshwater are plentiful (i.e., Pseudomonas and Vibrio). Also, in 2001, researchers demonstrated that the ancient form of microbial life known as archaebacteria is one of the dominant forms of life in the ocean. The role of archaebacteria in the ocean food chain is not yet known, but must be of vital importance."
you can further read about this article discussed here below.
and i thank you for not pointing out my "why should i give a Damn" comment. the dead isn't coming back to life any time soon, all i can do is maybe share a bit of my suggestions to save the ones that are still living and breathing. Doggy i am sorry but dragging my comment and suggestions this far wasn't my idea, if you don't use Aquarium salt for your Betta's i was trying to suggest you start to use them. if you do good for you and you have yet to answer my other 2 questions.
another thing i saw your Betta's pic in a little Petco sized Betta plastic cup, i hope you don't keep all your Betta's in little jar like that, in short ill say odds are stacked against you in maintaining proper Betta health in that size containers unless you do daily water change. good luck with your other 11 Betta's.