Aquarium filter with inside compartment heater, ensures crystal clear healthy water: easy care. The FilterBox EasyCrystal is a complete compact space-saving kit for optimal filtration of the aquarium water. - An additional compartment enables integration of a heater in the FilterBox EasyCrystal. (Heater not included in delivery Recomendacos the termocalentador Tetra HT 50 high precision..) - By its physical, biological and chemical filtration intense, the EasyCrystal filter ensures crystal clear, healthy water. - Mechanical Filtration: Filter Floss double layer for safe disposal of even the tiniest particles. White Face = pre-filter for coarser particles, green face = fine filter - Biological filtration: Filter Foam [and Bio Filter Balls] with an extra large surface for settlement of beneficial bacteria - Chemical Filtration: specific active carbon to eliminate water and odors unpleasant - EasyCrystal Cleaning the filter is extremely simple: replace the filter cartridge every 4 weeks. You will not have to wash the filter medium or wet hands! - Suitable for aquariums from 40 to 60 liters - Approved by the TÜV / GS Package Quantity: - EC 300