Tim Ellis wrote: > Does anybody know if dissolved metabolic or biological waste shows up as > conductivity? How about excess food or anything else like that? Yes, these will raise conductivity. --Randy ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!