Hi Mike, I know Teresa on the list uses water lettuce quite successfully. I wonder if her stain is one of those you are talking about. Teresa, any comment? Tomoko ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto