does anybody have a problem with their big fish and cloudy eyes.

[AndreR]

"Ammonia Burn"...

...has there ever been a proof for that myth?

I mean "Burn"...

...of course high ammonia levels stress fishes...

...but "burn"...is there any scientific evidence ever cited on that claim?

(Please no unproven Koivet-Stuff )

I´d rather check for Columnaris in that case....

 

[teleost]

"Ammonia Burn"...

...has there ever been a proof for that myth?

I mean "Burn"...

...of course high ammonia levels stress fishes...

...but "burn"...is there any scientific evidence ever cited on that claim?

(Please no unproven Koivet-Stuff )

I´d rather check for Columnaris in that case....

I think the use of the word "burn" is used loosely in this instance. When you get ammonia on a sensitive part of your skin (healing wound) it "burns". Is it a clinical burn? I don't know. I do know that it hurts. It's easy to understand that ammonia would irritate (or burn) the sensitive gills of fishes.

Just curious...does columnaris become more evident at water changes?

 

[AndreR]

Thanx for the explanation

Columnaris is very common as a symptom caused secondarily by stress, so probably also by waterchanges or especially by bad keeping conditions in general and it very oftenly infects the eyes first.

Light infections disappear after improving the causing factors (very obvious in Black Telescope Goldfish), worse infections often develop after causing too much stress.

I assume that in most cases the stresses cumulate, first the conditions are bad and then a very radical waterchange does its best to support the outbreak...

Columnaris would be my first suspicion, clowdy eyes very often appear without any ammonia around....

...although a physiological distress of the eye cannot be excluded in that case, but ammonia as a stressfactor in general could also cause ...Columnaris.

So, like always it is a matter of diagnosis...