Lava stone is a naturally occurring, highly porous material free of organic pollutants. Its exceptional structure provides optimal conditions for colonization by nitrifying bacteria such as nitrosomonas and nitrobacter, helping maintain crystal-clear aquarium water.

Key Benefits:

• Biological & mechanical filtration
• Highly porous lava granules
• Supports beneficial bacteria growth
• Safe for freshwater and marine tanks
• Natural, non-toxic, and long-lasting