A good article on another fish website:
http://saltaquarium.about.com/cs/maintenancecare/a/aa111898_4.htm
It is talking about saltwater tanks, but alot of the information would apply to a freshwater tank as well.
http://saltaquarium.about.com/cs/maintenancecare/a/aa111898_4.htm
It is talking about saltwater tanks, but alot of the information would apply to a freshwater tank as well.
