Blue Thumb Carbon Clear Activated Carbon, 5 Pounds

Blue Thumb Carbon Clear is a bituminous coal exposed to extreme heat, which "activates" the carbon giving it a powerful ability to absorb chemical pollutants. The billions of pores within the carbon act as hundreds of sponges soaking in many pond pollutants such as tannin, ammonia, nitrite, and nitrate. The result is a polished, healthy environment.

• Includes mesh application bag
• Safe to use around aquatic life
  
• Treats up to 2,000 gallons