Mm.. I dunno but one of my coriesd never grew and eventually died in my fourite tank.. I dunno if he was "retarded" or stavred or something..
anyway, i will say one thing, I have had no luck with flourite and quite frankly, my plants grow slower (if at all) in it then my original gravel. I would just spend the extra $5 a bag for ADA AS then flourite. it definatly looks better, makes plants grow better, and cories love to stick their noses into it.