Available in three sizes to suit the four sizes of Filter Air, just replaced the sponges periodically through the year, or more often if required. With the dual sponge models, only change one sponge at a time.

The sponge allows for the trapping of dirt particles within the aquarium, but also provides a great breeding ground for bacteria, ensuring your water quality is left at its’ very best. The dual mechanical and biological filtration is a great combination, and chemical filtration can be included with the addition of carbon into the centre (sold separately).