I'm trying to start using a R.O. unit in order to get softer water, as specially blackwater Apisto species are posing much problem with their eggs. Tsuh Yang from this list suggested one from Kent Marine, but he has no experience with it. Does anybody has experience with "Kent Marine Full-Size R.O. unit 100 gallons per day"? Or another unit from a different trade? How should I use the R.O. water? Mixed with normal water? Any suggestion? Cheers. ------------------------------------------------------------------------- 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"!