About This

• The innovative, patented 3D fiber structure of Sera Crystal Clear Media very quickly removes even smallest particles above 10 µm (such as floating algae or sludge)
• For aquariums up to 95 gallons
• Unlike common filter wool, the filter balls keep their shape and can be washed out several times. They are 80% reusable after washing out.
• The high performance filter medium is suitable for both freshwater and marine aquariums and all filter types
• The biological filter medium Sera Siporax Professional is the perfect addition to Sera Crystal Clear