Refugiums

[mr_alberta]

So, it is my understanding that a below tank refugium for growing pods is quite useless as the pods get minced up by the return pump. Is this true? I'd like to increase the pod population by adding more rocks in the sump (I don't have space for a hang on fuge either), but if it won't work, then maybe I'll hold off on spending cash on some more live rock. What are your experiences?

Any help would be appreciated.