Snails can help us understand what is going on in the pond, primarily the health of the pond. Snails are a living meter that most often will react to drastic chemical changes taking place in the pond. Though healthy for fish, if the water becomes slightly acidic, this will cause snails’ shells to become pitted and scored. This is a general indication the pond is healthy, although extremely acidic water is dangerous to fish and will kill the snails.

 

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