05/06/2026
Keep your aquarium healthier and more stable with Fishkeeper Crystal Max Biological Filter Media.
Designed with high-surface-area porous ceramic cylinders, Crystal Max provides the ideal environment for beneficial bacteria to thrive. These bacteria play a vital role in breaking down harmful ammonia and nitrite, helping maintain long-term water quality and a healthier aquarium ecosystem.
Suitable for tropical and coldwater aquariums, Crystal Max works perfectly in external filters and built-in weir filter systems. It also comes supplied in a convenient storage jar with a free filter media bag included.
Key benefits:
• High-quality ceramic biological media
• Encourages beneficial bacteria growth
• Supports the biological filtration cycle
• Helps reduce ammonia and nitrite
• Long-lasting and easy to use
• Suitable for most aquarium filters
• Includes free filter media bag
Usage tip:
For best results, use alongside mechanical and chemical filtration media. Avoid replacing all biological media at once to preserve established bacteria colonies.
Available now in-store and online.