Aquarium filter Easy Crystal

Enhanced action to limit algae development. Highly effective anti-algae agent acts against filamentous and penicillate algae present in the aquarium. Preventive action to limit algae. Intensive mechanical and biological filtration: the double-layered foam filter removes even the finest particles. For long-lasting crystal-clear water! Simplified "1-handle" maintenance: only the cartridge needs to be replaced every 4 weeks to maintain healthy, balanced water. All without getting your hands wet or having to wash the filter foams. Filter foams to be used exclusively with EasyCrystal filter and ReptoFilter (for aqua-terrariums).