Corie lost barbells and then died.. contagious?

[klumsyninja]

I have a problem in my 90 Gallon planted tank with my Cories.. Here's a link to the thread on plantedtank.net where I posted the problem http://www.plantedtank.net/forums/fish/ ... -help.html

I'm hoping you will have more imput here as you all know a lot about cats..

Thanks for your help,

Brandon.

[MatsP]

Panda cories are notoriously sensitive to high temperatures (and to them, 80'F is high). It's not an uncommon scenario unfortunately. Their natural habitat has a temperature around the low to mid 70's.

An additional factor may be the CO2 injection, because that will essentially lower the fish's ability to breahe oxygene (because just like us, the gas exchange in the gills (and our lungs) is based on the difference in concentration between O2 and CO2 - if the CO2 level in the water is higher, the amount of CO2 released by the gills will be lower than in otherwise the same conditions with a lower CO2 level in the water). This is particularly the case if your CO2 injection is on 24/7 since CO2 is not consumed during the night, and the plants do not produce oxygen during the night.

It may of course be many other things, but my first guess would be temperature & CO2 combination.

--
Mats

[AlaskanCorydoras]

What is the PH of your tank? Pandas are also notoriously sensitive to PH, and as close to neutral as possible is good. (Or a bit on the acidic side) With Co2 injection you can go very acidic very quick. Also, how hard is your water? That could also be a problem.