biOrb Air Stone x 5

Biorb airstones can be used in all of the biorb and biube aquariums. They are also suitable for use in other aquariums, with an air pump and an average sized airline. Extra oxygen can be particularly beneficial to fish in the event of a filter failure or a heater over-heating.
Biorb airstone pack of 5 – great value
For use in biorb, biube and with any normal airline
It is essential to change your airstone in a biorb tank as it provides means of filtration