if you go to the catfish digest there has been quite a lot of discussion. seems there are a couple of prevailing positions. one, that the sharp edges of substrates like Flourite damage the barbells of species such as cory's. but most serious research points to dietary defiencies being the cause rather than the substrate. this is not to be considered a statement of fact but strictly my own observations from reading the digest. i have however seen improvenment once i started feeding bloodworms and brine shrim, both frozen. rich green --- StripMime Report -- processed MIME parts --- multipart/alternative text/plain (text body -- kept) text/html --- ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/