C chumanji New Member Joined May 3, 2006 Messages 12 Reaction score 0 Jun 4, 2006 #1 What does Diatom Filter Do? What and when do you use it.
B breezer40 Fish Addict Joined Mar 29, 2004 Messages 737 Reaction score 0 Location Derbyshire UK Jun 4, 2006 #2 This might help..Had no idea myself till I looked it up http/www.carolinagal.com/diatom.htm