YOu can use baking soda to buffer -- changes KH only. You can use calcium carbonate, availle form hydroponic and brew-your-own-beer places -- it changes KH and raises hardness (GH). Check out the info on George and Karla Booth's pages at : http://aquaticconcepts.thekrib.com/ Look for the chemistry pages. sh --- Imw88@aol.com wrote: > Dear AGA members, I just got a compressed gas CO2 > system. I know my pH > will start to drop once I turn it on. I'm aware that > there are all kinds of > ways to "buffer" the water but I've never used them > before and I'm hoping some > of the members can shed light on this for me. If someone > can explain the > different ways and anything pertinent you think I need to > know. How can one keep a > soft and slightly acidic without the pH dropping too low? > > Also, in the last issue of TAG, Volume 18 Number 1, > Jan-Mar '05, the last > article mentions a variety of different aquatic mosses. > I've search the web a > bit but cant seem to find them. Does anyone know where I > can find them? > Also, I just wanted to thank everyone once again who > help me last time. > You guys were a big help. I'm hoping the members come > through once again. > > > > Thanx, Sincerely, Ilan > _______________________________________________ > AGA-Member mailing list > AGA-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/aga-member > _______________________________________________ AGA-Member mailing list AGA-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/aga-member