Juwel bioCarb XL Ceramic Granules Media for Bioflow XL (8.0). The Juwel Cirax Compact Filter Media is designed to allow free and efficient supply of water through your filters and at the same time providing a large surface area for growth of bacteria responsible for breaking down harmful ammonia and nitrite in the aquarium. Suitable for JUWEL Rio 400/450, Vision 450 & Trigon 350.
