Biorb / Biube service kit
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.
A partial water change of 30% should be carried out at the same time.
3 x Replacement filter cartridge
3 x Algae cleaning cloth
3 x Sachet of water preparation chemicals.