I have found a black sand that appears to be identical to the 3M black colorquartz for 50cents/ pound at both Blue Sierra in Issaquah, and A Place for Pets down south. I do think it is "heavier" than some other substrates, it holds roots pretty well. I got some really fine grain white sand to try and the stuff practically floated. Ken --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member