That is a fine opinion and thanks for it, wishy-washyness aside...
I should reiterate that the substrate in question is mostly aragonite sand, with the coarser bits mixed in. It's a pretty homogenous mixture. But I could get a large strainer and go at it, if the consensus was that the shell pieces are more harm than good.
The other concern is the sharp edges to these bits. It's not painful to handle, but definitely has eggshell-like qualities. And as far as the increased buffering capabilities, is it really a concern with our notoriously hard water?
