New to snail's

ChrisP75

Exodon
MFK Member
May 26, 2013
87
11
23
Sacramento
Hey so I'm into keeping snails in a few of my tanks and I noticed some of the bigger snails had thinner shells towards the body. They're all moving around and seem very active. Is this growth or potentially lack of calcium?

20191011_095520.jpg
 
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