The question though is whether the benefit to the shrimp comes from the hardness or the calcium from the cuttlebone? I'd say it is from the calcium in the tank thus making the potential hardness a non-issue so long as I can keep it under control. It seems so long as the amount of exposed area of cuttlebone does not spike the hardness I shall be good. Of course, I posted this question because there is no good web evidence suggesting that Cuttlebone even helps and I am still hoping to hear from anyone that is actually doing this. ________________________________________________________ Shango Los Phone: 206-595-9006 Fax: 206-729-5271 www.ShangoLos.com www.SunbreakShines.com -----Original Message----- From: gsas-member-bounces@thekrib.com [mailto:gsas-member-bounces@thekrib.com] On Behalf Of matt kaufman Sent: Sunday, October 07, 2007 6:52 PM To: Greater Seattle Aquarium Society member chat Subject: Re: [GSAS-Member] cuttlebone or not 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_hotmailn ews _______________________________________________ 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