cory cats - The Planted Tank Forum
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post #1 of 39 (permalink) Old 11-15-2012, 07:29 AM Thread Starter
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cory cats

i have a cory cat in my tank that has lost its barbs and every time i put a new one in my tank it looses its barbs and dies and im not shure why someone give advice
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post #2 of 39 (permalink) Old 11-15-2012, 08:04 AM
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what substrate do you have? cories should be given smooth substrate. sand is ideal....
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post #3 of 39 (permalink) Old 11-15-2012, 08:24 AM
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Post your parameters: Ammonia, Nitrite, Nitrate, pH, KH, GH, and temperature.
Also your substrate, plants (if any), filtration, and anything else about your tank.

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post #4 of 39 (permalink) Old 11-15-2012, 01:37 PM
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Its usually a water quality problem
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post #5 of 39 (permalink) Old 11-15-2012, 02:41 PM
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I have a very healthy group of Cories using Florite; sand may be ideal but not necessary.

Most probably a water quality issue as stated above.
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post #6 of 39 (permalink) Old 11-15-2012, 02:52 PM
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Quote:
Originally Posted by KrazyFish View Post
I have a very healthy group of Cories using Florite; sand may be ideal but not necessary.

Most probably a water quality issue as stated above.

Strongly Agree
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post #7 of 39 (permalink) Old 11-16-2012, 12:12 AM Thread Starter
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i have fluval stranum lots of plants all perimeters are fine heres a pic of the tank its an old pic i have some mopani wood in there now and the co2 is hooked up and theres a lot less algae
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post #8 of 39 (permalink) Old 11-16-2012, 12:18 AM Thread Starter
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heres a more recent pic i hope this helps
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post #9 of 39 (permalink) Old 11-16-2012, 12:52 AM
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Looks like theres no enough space at the bottom of the tank for the cotys to swim, that might be the cause of death. I hear that they do need a good deal of swimming space at the bottom, ive never had an issue with this though, could be one of the problems


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post #10 of 39 (permalink) Old 11-16-2012, 01:41 AM
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I think the water quality is poor because the tank is overstocked. Newest fish can be the ones that suffer most in that situation and corydoras are larger fish than they look.

My corydoras are on a heavily planted clay substrate. Not much actual bottom and what is there is rough. Their barbels are just fine.
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post #11 of 39 (permalink) Old 11-16-2012, 02:04 AM
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What are your parameters?

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all perimeters are fine
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post #12 of 39 (permalink) Old 11-16-2012, 02:27 AM Thread Starter
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kathyy my tank is actually understocked its just the angel of the pic its an 7.8 gal fluval with 5 rasboras 2 otto cats 2 mollies and 1 cory cat i dont think its overstocked ive had more fish in there before with no prob: to somewhat my parameters all check out ok i tested a couple days ago and everything was fine
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post #13 of 39 (permalink) Old 11-16-2012, 02:30 AM
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Cory's can be very sensitive, add to that the fact your adding them to such a small environment, I would bet that an amonia spike is causing your problems.
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post #14 of 39 (permalink) Old 11-16-2012, 02:31 AM
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What are the actual numerical results of the parameters?

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post #15 of 39 (permalink) Old 11-16-2012, 02:32 AM
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Also how much CO2 are you injecting? Sometimes fish need a slow intro to a tank with a lot of CO2.

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