[orcafood]

I'd say what I dosed was very fine aragonite powder which likely contained not only caco3 but many of the other necessary elements and ions. I didn't rinse it at all either. Might be why Kz coral snow appears to be off white, it is powdered aragonite?

At one point I was thinking about filling up a huge tube halfway with well powdered aragonite, then every morning flip the "rain stick" while water trickles through all the while.