Fishy411 said:
ok. I just decked out my tank with black gravel. It is fairly smooth. I want to get about 6 cories tomorrow. Will they be ok with gravel?
Hi Fishy411
It depends on what you are calling gravel; the term means different things to different people. Sizes range from very fine to small chunks of rock.
For corys, gravel needs to be small enough for them to move pieces of it when they search for food. If it is larger, it will wear away their delicate barbels.
Also, if your last corys died from eroded barbels, and you have had other fish losses, wait until you are sure that your tank is safe before adding any more. Barbel erosion is often due to bacterial infections and if the causes are not changed, you will only have more fish die.
Bacterial infections take hold, from bacteria that are always present in a tank, when stress happens that weaken the fish. This can be due to overfeeding, high nitrite levels, overcrowding, sudden changes in water temperature, low oxygen content, or infrequent and/or inadequate water changes.
I would strongly suggest that you determine what is wrong with your platties and fix the underlying problem before adding corys or any other fish. What do you suspect is wrong with the platties?