Algae / Detritus Cleaning Crew - Snails vs. Hermit Crabs

[gagesandfish]

I thought about getting sea cucumbers, but after 20 minutes skimming some of the horror stories at wetwebmedia.com, decided to forget about getting them.

For example, on this page: http://www.wetwebmedia.com/seacukes1.htm

See: Interesting but Deadly Critters?