The Tetra EasyCrystal FilterBox 300 is a compact all-in-one filtration system for aquariums of 40–60 L, combining mechanical, biological, and chemical filtration with an optional heater compartment. Its space-saving design makes it perfect for maintaining crystal-clear, healthy water.
Features & Advantages:
• Heater compartment for easy integration of a Tetra Heater HT 50 (heater not included)
• Mechanical filtration: double-layer fleece removes even fine suspended particles (white = coarse, green = fine)
• Biological filtration: filter sponge and bio-filter balls provide a large surface for beneficial bacteria
• Chemical filtration: activated carbon eliminates water discoloration and odors
• Easy maintenance: replace the cartridge every 4 weeks, no washing required, no wet hands
• TÜV/GS tested for safety and reliability
• Ready-to-use compact set with option to retrofit heater later
• Ideal for hobbyists seeking efficient, low-maintenance filtration in a small, space-saving design.
