Bev,
This does seem like, and is a good thing to do. I am more than willing to do this.. but I think at this point it would be kind of pointless as I am upgrading tanks in the next month or so. At this time I will be replacing my sand bed, and cleaning my rocks thoroughly.
Otherwise, I'd without a doubt do this ! I did it for a couple days and the amount of crap that came out of my tank was insane!
Definitely makes me re-think the sandbed idea!