biOrb Service Kit with Water Optimiser (Pack of 3), multi-colour The filter cartridge in your biOrb should be changed every 4-8 weeks. This pack includes everything you need for 3 filter changes. A new cartridge is supplied in the Service Kit as well as a special cleaning pad for removing dirt and algae from the inside surface of the biOrb and water preparation chemicals for carrying out a partial water change. The kit also contains easy to follow step by step instructions. Includes Water Optimiser to help keep your biOrb's water crystal clear. biOrb Feng Shui Pebble Pack, White iOrb marble pebbles add colour to the base of your aquarium
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