the link I would like
to provide is broken ATM but if ya can find aquarium frontiers nov 1997, a
great article by Dr Shimek

Copy and paste

http://216.239.37.104/search?sourcei...che:http%3A//w
ww.animalnetwork.com/fish2/aqfm/1997/nov/features/1/default.asp
Rod Buehler
www.asplashoflife.com