Mark, Thank you for input at well, I have small amounts of hair algae trying to get started on the upper reaches of my plants. I have pretty much abolished the BBA and staghorn algae. I just finished a WC, I do two 20% WC per week, and picked up a smaller bottle of Excel at my LFS. I will start dosing today and report progress (hopefully) as this continues. Roy _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member