Can Corydoras live in a tank with fluorite gravel? - The Planted Tank Forum
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post #1 of 17 (permalink) Old 07-26-2012, 04:39 AM Thread Starter
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Can Corydoras live in a tank with fluorite gravel?

I recently changed my tank to fluorite gravel. Added two cories about 3 weeks ago. One died a few days ago and now the other is not looking well. Did some research and saw a comment that they do not do well with rough substrate. Anyone keeping cories on fluorite successfully?
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post #2 of 17 (permalink) Old 07-26-2012, 04:53 AM
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I have Corydoras pygmaeus and Corydoras panda on fluorite and they are doing great.
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post #3 of 17 (permalink) Old 07-26-2012, 05:14 AM
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if you just changed all your substrate out, was your tank cycled before and did you not keep any of the old substrate in? your tank could be in a second cycle, which would account for your cories' deaths. test your parameters...
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post #4 of 17 (permalink) Old 07-26-2012, 07:01 AM
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I've had corydoras Habrosus in a tank with ecocompete before....bad idea. Poor little things all lost their barbels sifting through the soil!
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post #5 of 17 (permalink) Old 07-26-2012, 01:51 PM Thread Starter
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Should have mentioned that the gravel was changed about 8 weeks ago, didn't change the canister filter and had a very short cycle. ammonia and nitrite show 0. Nitrate is 40 ppm I'm using pps-pro solutions for ferts. This may have been related to heat as the tank got to 82.3 max while I was gone on vacation according to my RKL.

I'm interested in hearing from anyone who have kept cories on fluorite longer than 3 months. I'd really like to have 3-6 of these in the tank but only if they have no problem with the substrate.

Also, if cories are not compatible with fluorite what bottom dwellers are?
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post #6 of 17 (permalink) Old 07-26-2012, 01:56 PM
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i don't recommend anything that likes to root in teh substrate to be on flourite. The edges are just too rough. Loaches, cories, etc will all have issues with their barbels when kept on that sort of surface long term. Also, cories are extremely social, and should be kept in groups preferably larger than 6.
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post #7 of 17 (permalink) Old 07-26-2012, 03:46 PM
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Mine did great, they were even breeding. But I used flourite sand.


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post #8 of 17 (permalink) Old 07-26-2012, 03:48 PM
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I think it's a myth, but I haven't confirmed it by testing. My quarantine tank has flourite and about 20 young cories that are fine, but they will be moved in a couple weeks. I've never lost cories in other tanks to barbel deterioration as far as I know.


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post #9 of 17 (permalink) Old 07-26-2012, 04:19 PM
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I have a breeding population of pygmy cories on a tank that's mostly florite. I just gave them a small "sandbox" of pool filter sand in one corner and they do all their rooting around in that area. It's pretty clear that they don't like the coarse gravel and they will eat much more happily if I throw the food onto the sandy part of the tank.
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post #10 of 17 (permalink) Old 07-26-2012, 04:25 PM
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I had cories in rough flourite, they lost most of their barbels. I then changed to seachem onyx black sand and they loved it.

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post #11 of 17 (permalink) Old 07-27-2012, 03:58 AM Thread Starter
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I have a breeding population of pygmy cories on a tank that's mostly florite. I just gave them a small "sandbox" of pool filter sand in one corner and they do all their rooting around in that area. It's pretty clear that they don't like the coarse gravel and they will eat much more happily if I throw the food onto the sandy part of the tank.

That sounds interesting. What size tank and how big is the sandy area? Did you put the sand the full depth of the surrounding substrate or just add a layer on top? Any pictures of this setup?
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post #12 of 17 (permalink) Old 07-28-2012, 04:17 AM
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Quote:
Originally Posted by jcgd View Post
I think it's a myth, but I haven't confirmed it by testing. My quarantine tank has flourite and about 20 young cories that are fine, but they will be moved in a couple weeks. I've never lost cories in other tanks to barbel deterioration as far as I know.
It is a myth, I concur. I recall numerous people not having issues with cories and flourite, myself included. I have only used flourite original since 02'. None of my cories lost their barbels. The only time they will do so is when water conditions are poor. Water is at is worst condition at the substrate level. Thus giving everyone the impression that it is the flourite itself being the culprit. Flourite is not really sharp imo and unlike eco its not rough so it more feasible.
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post #13 of 17 (permalink) Old 07-28-2012, 04:35 AM
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I have my suspicions but I can't say for sure. Seems to be water quality to me too.


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post #14 of 17 (permalink) Old 07-28-2012, 10:33 AM
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I have breeded cories in regular flourite. I didnt care much for water quality. It seemed fine...never paid much attention to it.


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post #15 of 17 (permalink) Old 07-28-2012, 01:08 PM
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My Sterbai have been doing great in my flourite tank for 2 years. Barbels are healthy looking as well. Interesting experiment from the person with sand in the corner though!


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