The filter cartridge works like a waste bin, trapping dirt, once full it should be thrown away and replaced with a new one. This should be done every 1-2 months depending on the size of the aquarium and the number of fish kept.

Supplied in packs containing - 1 new filter cartridge, 1 cleaning pad and 1 water treatment sachet.

biOrb Filtration from Reef One on Vimeo.