barbels

My skunk corydora is in bad shape.. i'm not sure what's wrong with him and need advice ASAP! About 2 weeks ago, I noticed that the barbels on one of my skunk corys were almost gone (they are very short and stubby compared to the other cory). He was still eating and seemed okay otherwise, so I...

Hey guys,   I am looking for advice on type of Black sand that others are using for cory tanks. I have read up on black Diamond sand but this seems to be available in the US and not UK. I live in scotland and have used play sand with great sucess but i want to change to a black sand that is cory...