Boyd Chemi-Pure removes ammonia and other harmful waste products and toxins from your home aquarium, regulates pH and contains no phosphates. Works equally well in marine or freshwater aquariums to remove heavy metals, copper, phenol, ammonia and other nitrogenous waste. The results of using this safe, effective filter media are crystal clear water with fewer water changes and healthier fish, corals and invertebrates that acclimate more quickly and thrive in their new environment. Use one 10 ounce unit, already packed in a filter bag, for up to 40 gallons. Remains active for 4-6 months.
Size: 10 oz. (One unit treats 5 to 40 gallons for 1-6 months).