JUWEL Cirax are highly porous ceramic-based pellets which, due to their extremely large surface area, create the perfect environment for useful bacteria. In your JUWEL filter, Cirax helps to ensure excellent water quality. Using a special basket, tailored to the size of your JUWEL filter, makes it easy to use, whilst the optimised filling quantity means a long service life of up to a year.
Size L (previously known as Standard)
• Excellent water quality due to effective biological cleaning
• Extremely large surface area due to highly porous filter material
• Suitable for use in freshwater and saltwater aquariums