The Why's and How's of Sand Beds - by Dr. Ron Shimek Ph.D.
http://www.reefs.org/library/talklog...ek_090698.html

Muddy Waters - by Dr. Ron Shimek Ph.D.
http://www.animalnetwork.com/fish2/a.../1/default.asp

Sediment Biology References - by Dr. Ron Shimek Ph.D.
http://www.rshimek.com/reef/sediment_ref.htm