Columnaris?

[Xyber001]

Need help Identifying this disease, just bought these fish tonight, they are still in the bag for adjustment purpose. We just noticed the white spots and little black and red areas around it. (thinking columnaris), The female swordtail is definitely pregnant (why we got it). We have a small tank setup on standby to be hospital tank but need to know what to do, also, Chinese algae eater has been in with them for a while now too.
Any advice is helpful as there have been tons of contradictions on this topic from everything I've read. ex. One site says crank temp up to 85, other says down to 74.

 

[Xyber001]

swordtails both dead

 

[PyroBrit]

How is the algae eater?

 

[Xyber001]

May sound cruel but noticed a white spot and can't get out to get meds till tonight so sent him to the toilet in the sky Didn't wanna chance the rest of main tank on what was prolly columnaris and by time I could start treatment seeing how things were going, could be bad

 

[Caprichoso]

Would advise against flushing fish down the toilet in the future. Not only is it cruel (as you stated) but it also increases the chance of introducing diseases/pests into the natural ecosystem. By the way, if you have seen a "spot" on one fish, it's in the water column already so flushing just the fish with the spot was unnecessary IMO. Is your tank cycled? Also, have you tested the water with a test kit? What are the results?

 

[Xyber001]

Our regular water is heavy sulpher based, as well as some other minerals, so our first setup was entirely pur filtered, the tank was initially cycled, however we had a severe bacteria bloom that wasn't going away after a few weeks from changes and clarifiers, and also causing alot of harm to the fish (lost every new fish introduced and a few older ones) so we cleaned and we refilled it using drinking water(spring/drinking) from the grocery store at the advice of a local pet store. Still early in cycling we kept the fish in some of the previous tank's water for a few days while we put some neon tetras in the new one to start the cycling.
Also all the fish were fresh from the store, still in their bag then sent over to a hospital tank, they haven't come in contact with the main.