anyone know about tropical tanks or can point me to a group?
I've had a tank for years but yesterday when I bought Mollies the LFS told me to add 1g aquarium salt per litre to the water now and again in a couple of days to keep them happy. He said this would be OK for the other fish and acts as a tonic. However when I search to find out about the other fish opinions seem divided. I have a Bristlenose catfish and 4 corydoras sterbai and some sites say they are intolerant to salt. I've already put the first lot in and everything seems OK but should I put the second dose of salt in? Thanks.