Draining your empty tank water onto the ground, however, CAN cause algae to grow there. Anyone doubting this should come see the parking area under my balcony...and that's from like three months ago. Where do you drain your emptied tank water during water changes? The tub? The garden? _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member