I recall hearing about the very similar experience with diplotaenia on Japanese apiso list last year. The person also resorted to very very small water changes to get over the problem. 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