I read in some post that Seachem realizes that Flourite Red is dustier
and is going to wash it more thoroughly. When I filled my 55 gal, I
washed and washed and..... In another post I learned out using a fine
sieve or collander - I did that the next time - 30 gal - and it worked
better.

It is dust dusty stuff. But now I am intriegued about trying the
"normal" flourite. But need another tank to do that!!!!!!!

Bob