Mine doesn't.

well been pulling rock out since 11am and still not done. Crushin the lil bastards in my finding i saw a huge crab sneakin threw a rocks well lets just say he ate steal!!!! then i found about 15 frags so far toooT!!!!!!!!! haha well back to work.

Crush and remove anything you find, otherwise they may have enough body mass to regenerate themselves. Rinse or scrape the rock thoroughly so that the dead stuff is all removed. Dead bodies might cause an ammonia spike. Good luck!!!

Azilla,

How did the rock cleaning go?