The Fluval 2 plus Foam pad has been
specially developed as a standard filter medium for the Fluval 2 plus Underwater
Filter and maximizes surface contact between the water and the media. These
large filtering surfaces ensure efficient cleaning of the aquarium water and
maximize the colonization of beneficial bacteria.
Replace the pads when the water circulation slows noticeably or when the Filter
Clogging Indicator is in the down position.