Another sick corydora

[hils]

So my cory with the fungal patches seems better, kind of. One of his fins on the bottom went red and is now a bit tatty, the fun on the other side is now red, but he seems happy otherwise.
My other cory however has a very hairy white spot on her side, and her tail is really tatty, almost melted looking. :-(
I've been treating the tank for 8 days with antifungal etc.
no one else seems affected, so should I remove these two frm the tank and treat in a small tank? Or should I just leave them in the community tank as they have been in there all this time already?
Sorry for the long post.

 

[himdie]

Since ur sayng they're bottoms are getting red I'm thinking ur substrate is rlly dirty and leaching ammonia and its hurting ur bottom dwellers I'd say do a good gravel vacuum and some nice big water changes

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[hils]

Sorry, should have mentioned that it's a planted tank, so I don't tent to vacuume it. The water chemistry is all good, did a 50% change day before yesterday. It doesn't seem to be upsetting my bristle noses though either. Just these two. :-/
Only one has the redness on his fin, the other just has fluff and a rotten tail. :-/

 

[himdie]

Is it gravel? Sand or what?

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[hils]

It's gravel over top of a clay type of substrate for the plants.

 

[himdie]

Honestly I would still say it's the substrate all the mulm would get built up in the gravel after a while and it gets toxic for the bottom feeders even though u have plants they woulnt take up all the nutrients that build up

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[hils]

Wouldn't that also hurt the bristle noses?
Could I somehow test the water straight off of the stones to check? The rest of the tank shoes 0 ammonia

 

[himdie]

It would if he spent alot of time on the bottom and im not 100% sure on how to check that is it laterite under the gravel?

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[hils]

I think you're on to something. So I hoovered the bottom and around under the driftwood there was loads of poo and plant material.
Do you think I should put those two into a small tank of their own until they are better?
I'm heading away for 3 weeks tomorrow and worried for my inexperienced friend that will be looking after them.

 

[himdie]

I would vacuum really well then maybe a water change if there's too much gunk kicked up and as long as the substrate is clean they should be fine and heal

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[hils]

I can't vacuume too much as then it's suck up the dirt that the plants are in. :-/

 

[himdie]

Hmm thats tough then not sure what to do in that case I use sand or eco complete so no detritus gets in between that

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