Yes. the calcium in the cuttlebone will raise the water hardness by adding calcium to the water. Whether that helps the shrimp - well, what are their requirements?Before adding things, you might want to do some research into what they need. Do they need hard water? soft? A diet that includes some vitamins? Or not? As Clay pointed out, there's lots of ways to raise hardness that don't involve adding cuttlebone to the water. > From: Shango@shangolos.com> To: gsas-member@thekrib.com> Date: Sun, 7 Oct > 2007 17:04:42 -0700> Subject: Re: [GSAS-Member] cuttlebone or not> > > Is it > the calcium that supposedly help the shrimp or am I just using the> > cuttlefish to raise my water hardness and THAT is what helps the shrimp?> > > > -----Original Message-----> From: gsas-member-bounces@thekrib.com> > [mailto:gsas-member-bounces@thekrib.com] On Behalf Of naturalart> Sent: > Sunday, October 07, 2007 4:53 PM> To: gsas-member@thekrib.com> Subject: > [GSAS-Member] cuttlebone or not> > Cuttlebone is not really bone but rather > shell. cuttlebone come from squid> which are 'directly' related to a relict > group of animals called ammonites.> The nautilus is one of the two remaining > living species in this group. Maybe> someone can explain the chemistry on > this but squid die by the thousands> regularly in the ocean. You are talking > about freshwater shrimp, so> obviously it will harden your water, but it > shouldn't be toxic. Personnally> I think there are better ways to raise your > hardness or alkalinity.> > Clay A.> > _______________________________________________> GSAS-Member mailing list> > GSAS-Member@thekrib.com> > http://lists.thekrib.com/mailman/listinfo/gsas-member> > > _______________________________________________> GSAS-Member mailing list> > GSAS-Member@thekrib.com> http://lists.thekrib.com/mailman/listinfo/gsas-member _________________________________________________________________ Boo! Scare away worms, viruses and so much more! Try Windows Live OneCare! http://onecare.live.com/standard/en-us/purchase/trial.aspx?s_cid=wl_hotmailnews _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member