Columnaris Aftermath In Quarantine Setup

Two weeks ago I decided to up the numbers of my schooling/shoaling species so I bought 4 cardinal tetras & 3 otos (I already have 7 cardinal tetras & 3 otos). I set up my quarantine bucket with a cycled sponge filter & heater and properly acclimated the fishes, it was past 10 in the evening then. The morning after, one of tetras died and I just scooped it out and disposed it. Chalked it out to maybe stress and not some serious disease. But a few hours later, another one again died and the two remaining tetras are showing the symptoms of columnaris. So I immediately dosed some medicine (sera baktopur is the only one I got, kanamycin & nitrofurazone is not available in my place) and hoped for the best. One didn't make it the next day and now I'm left with one cardinal tetra & the 3 otos. I'm planning to finish the one month quarantine period to be sure, but my question is if the remaining fishes survive the whole ordeal, is it safe to add them to my main tank? Wouldn't they be carriers of the disease? How about the equipment (fishnet, bucket, filter & heater), should I sterilize them or just dispose them after?

 

Did you happen to get pictures?

 

Yes. Here's a photo of the cardinal that died last.



The dying off went on for about two days and it's been been two weeks now. The remaining fishes are now doing great and showing no signs of disease.

 

I would sterilize your equipment but your fish should be fine to add to the main tank agter treating them.

 

I would sterilize your equipment but your fish should be fine to add to the main tank agter treating them.

That's good to know, I'll sterilize them with bleach. I also have potassium permanganate but I'm a bit hesitant on using it.

 

That's good to know, I'll sterilize them with bleach. I also have potassium permanganate but I'm a bit hesitant on using it.

I would just use bleach myself