I second Shango's suggestion; ferts and water chemistry can make or break fish breeding and planted tank efforts. In fact, a series of "back to basics" covering other aspects including lighting, filtration, substrates, would be a good learning tool for members either new to the hobby or older hobbyist's that are returning. Roy _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member