Carbon Clear is a bituminous coal that has been exposed to extreme heat which "activates" the carbon giving it a powerful absorbing ability. 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, health environment.

• Treats up to 2,000 gallons for 3 months
• Includes (1) application mesh bag