How do you go about testing the hardness level of your water? I know this is a rather elementary question but hopefully some one can help me out. I about have the difference between KH and GH figured out. the only test I have just sort of gives you a round about view on whether your water is hard or soft. No real specific numbers and no differentiation between GH and KH. I would appreciate any responses. If you donm't want to clutter the list with repetitive info just email me.. Glenn ------------------------------------------------------------------------- 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"!