I think that Erik once told me that the reason the shrimp like Cuttlefish bone is because it raises the calcium and hardens the water a touch. I would suggest that putting a piece of Cuttlebone in your filter may be all you need to do. On 6/28/09 8:31 PM, "Seattle_Aquarist" <Seattle_Aquarist@comcast.net> wrote: > Hi All, > I have a problem; my water is very soft coming out of the tap. Even though > I do a 20% water change weekly, my plants periodically exhibit symptoms of > calcium and sometimes magnesium deficiencies in the form of leaf deformities > and slow growth. When I add additional calcium (calcium chloride) and > magnesium (Epsom salts) my plant perk up, grow more quickly, and the leaf > deformities decrease or disappear altogether. My question is, do you add > anything to you water to increase the calcium or magnesium concentrations in > your tanks? If you do add these minerals, would you share the information > as to what you add, when and how much? > Thanks, > Roy > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member -- Shango Los ::Development:: Listing and Marketing Specialist, Partner Alchemy Real Estate Marketing and Development ::Internet Development:: www.OutdoorLovemap.com ::Speaking Engagements:: http://www.vimeo.com/fourthfold :: Fine Art Portfolio:: www.ShangoLos.com ::Twitter:: https://twitter.com/shangolos _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member