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Re: Snail shells (was Call for Obs/deficiency symptoms)

Chris writes:

<< While not strictly a plant deficiency, I have wondered if when my
> ramshorn snail shells get streaky, or even turn pale/ whiteish, that is
> a symptom of something that could warn of a plant deficiency too?  Any
> ideas? - Chris >>

It usually indicates that your water is soft and/or acidic.  The shell is
primarily calcium, and reacts chemically with the stuff dissolved in the
water.  My ramshorns are all opaque and grey-brown in color.  I think they
look better in their "natural" transparent red, but I keep South American
fish, so they get soft, acidic conditions.