Posted: Thu Sep 17, 2009 3:48 pm
No, they will not get a significant amount through the water. It will likely get pulled out by your filter or just leave deposits on your tank.
Egg shells are by far the least suggested option for calcium, but since we have a number of international posters, not all can get cuttlebone, which is the most preferred method. worldpeace - Look in your local pet store's bird section for something called cuttlebone, or purchase it online. It is the best method and a 1.5" turtle can easily handle a head-sized piece of it at a time.
JAX
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Baby Boy - January 9th, 2011! (3 months old)
1 RES - 7" long - Umi (3.5 years old)
1 black lab/hound mix - Josie (1.5 year old)
2 cats - Mysti and Molly (6.5 years old)