I'm sure any type of seashell will work. I use shells or crushed coral in mine. Susan ----- Original Message ----- From: "Heather Peake" <hpeake@fhcrc.org> To: "Greater Seattle Aquarium Society member chat" <gsas-member@thekrib.com> Sent: Saturday, May 2, 2009 3:53:30 PM GMT -08:00 US/Canada Pacific Subject: [GSAS-Member] Sand Dollars instead of cuttlefish bone? Does anyone know if I can achieve Shango's happy shrimp results with sand dollars instead of cuttle fish bone? ÂI have several of the first and don't want to steal from my finches for the last. Heather _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member