It's the Normal Flourite (it is a brown color). What if I went 1 inch with the Flourite and 3 inches with the sand. Would I still have the sand falling to the bottom and the Flourite coming to the top? Also, If I have the Flourite on the bottom, Do I still have to rinse it first?
P.S. I did the "kid in the candy store" thing and already ripped open both bags of Flourite and dumped it in to see if maybe I have enough of it.
I found this site after everything was done. If I had known about the Black Flourite ahead of time, I would have gone that route.