what is a sump/fuge

[angelsj247]

Ive never read it in books, never heard of them til i came to this site.. what exactly is it.. (equipement and works) how does it help. I have a 20 gal fowlr which i will soon be keeping some softies.. will i need this?
Thanks for the help.

[Shooter7]

http://www.melevsreef.com/

scroll down to "what is a sump" and associated other readings. Lots of sump info on this site.