Be very careful about adding Corbicula to ponds especialy if the pond has an overflow pipe or siphon. Corbicula is notorious for clogging intake structures and cooling towers. I am sure they will also clog out flow structures. Corbicula can in proper conditions become very abundant in small areas which would mean they would filter pond water to the point of negatively impacting the balance of the food chain. IMO addition of the native fingernail calms would be a much better addition to a pond's ecosystem than Corbicula - asian clams.
NOTE: species in the genus Corbicula are true clams and not mussels as in freshwater mussels. There are distinct morphological differences between clams and mussels.

Last edited by Bill Cody; 04/15/09 09:11 PM.

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