Okay, so when I was setting up my aquariums awhile back I used Flourite to set up one of my tanks. Since it needed to be rinsed (don't get me started on that process... what a paing in the ) I used my hands to sort of 'work it' and noticed that the bits could, at times, be a little sharp. However, this didn't initially make an impression on me as something I needed to worry about. So I setup my tank and eventually fish, including three Corys. Then when I was doing some reading one day, I came across some posts about how Corys, and other bottom feeders with barbels, are prone to getting infections if they have to root around in a sharp substrate and that this could lead to loss of said barbels and death. Eek! So did I screw up here? Is Flourite a strictly no Cory/Loach/etc. substrate? It is so commonly used that it never occurred to me that it could be a problem, but if it can bother my hands, couldn't it damage a Cory's sensitive barbels?