what climate do you garden in Russ, and what type of bulbs interest you? dolomite is magnesium carbonate, I am not sure what the composition of pumice is.... Peter (UK) On Mon, Aug 5, 2013 at 8:57 PM, Russ Varnado <hoperv@yahoo.com> wrote: > I was wondering if Dry Stall is the same are pumice and dolomite? A > friend uses dry stall and he said it did not float like pumice. I just > bought a big bag for just $9.95. Any way I am new to bulbs, particular > Africa bulbs. I know everybody as a mix of their own. Can anybody suggest > a good general mix? Russ >