PolypLab Pro-Carbon 4000 ml.

PolypLab Pro-Carbon 4000 ml. (approx. 4 lbs.)High-performance activated carbon for crystal clear water in fresh-water and salt-water aquariums. PolypLab Pro Carbon is is an ultra high performance activated carbon manufactured under the most strict quality controls.Pro Carbon- Highly Active- PH Balanced- In pellet form to reduce dust and find grains- Lowest Phosphate Concentration in Industry