Hello Mike No water as soft as you talk about ( 70 - 80ppm) is not to soft to spawn Kribs. My water out of the tap is 6.8 to 7.0 pH and about 60ppm hardness. I've never had problems spawning kribs in it. What will have because of the soft water is you'll probably get more females then males as a sex ratio. This is what I ending up getting about 60% females. I actually liked this because I could trade or sell trios instead of pairs. I also spawn Pelvicachromis Taeniatus Moliwe and Kienke in my tap water. No problems with them either. Slightly harder water will probably only change your sex ratio of the offspring in the opposite percentage as in soft water. Good luck with the Kribs. They've always been one of my favorites even as common as they are in pet shops. Nice kribs are always a joy to keep. John Wubbolt ------------------------------------------------------------------------- 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"!