I have also heard that the nitrogen cycle breaks down at around 5.0. Can anyone clear this up? Micah Keith Monroe mkmonroe1@juno.com "It may be that He has the eternal appetite of infancy; for we have sinned and grown old, and our Father is younger than we." Chesterton. ------------------------------------------------------------------------- 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. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!