8 fish dead in less than one day

[Tank1]

Almost certainly a foreign substance has entered the water. When the chemistry and temp check out, nothing else will kill fish faster.

 

[Fishfunn]

Almost certainly a foreign substance has entered the water. When the chemistry and temp check out, nothing else will kill fish faster.

Columnaris bacteria will kill fish very fast like that with no symptoms, as well as like ammonia-nitrite poisoning. With ammonia-nitrite poisoning, initial symptoms are breathing heavy at the surface. The most aggressive variety of Columnaris will wipe out the tank fast with no early telltale symptoms.

If the cat's paws, which are loaded with bacteria from a litter box, contact the water, that can be a source of badness too.

 

[Back in the fold]

Columnaris bacteria will kill fish very fast like that with no symptoms, as well as like ammonia-nitrite poisoning. With ammonia-nitrite poisoning, initial symptoms are breathing heavy at the surface. The most aggressive variety of Columnaris will wipe out the tank fast with no early telltale symptoms.

If the cat's paws, which are loaded with bacteria from a litter box, contact the water, that can be a source of badness too.

I’ve never heard that before and it is certainly very good to know about .