Carbon Pellet Length (approx.): 0.3-0.5 inch; Carbon Pellet Diameter (approx.): 0.1 inch (4 mm). Package includes: 6 individually packaged 1 lb premium activated carbon (total of 6 lbs) in 6 pieces of black mesh bags and resealable plastic bags. Each mesh bag size is 8.0" x 6.0" approx. Bagged for easy handling and precise placement of carbon to ensure the particles do not travel through pumps and pipes. Zipper-designed mesh bag is reusable. The zipper is made of plastic, and it's safe for freshwater and saltwater use. Low ash content and phosphate output premium activated carbon is safe for both freshwater, saltwater, reef, and pond environments. Rapid removal of organic pollutants for crystal clear water. Guarantee Crystal Clear Water! Acid Free. 100% natural walnut shell carbon will not raise phosphate levels. Super effective, fast working, and high adsorption capacity. Works as multi-purpose chemical filter media that removes toxic compounds and medications. Works longer comparing to average activated carbon. Works longer compared to the average activated carbon. Ready-to-use media bag, convenient for use with your canister filter, power filter, or pond filter. Removes odors, discoloration, and impurities to keep water crystal clear. ****As with all carbon media, rinse gently with your aquarium water to remove excess dust before use. **Friendly reminder: Carbon is bagged in filter mesh bags and enclosed in resealable plastic bags. Package includes: 6 bags of 1 lb each premium activated carbon (total of 6 lbs) in 6 piece of black mesh bags, size: 8.0" x 6.0" approx. Bagged for easy handling and precise placement of carbon, and to ensure carbon media particles not traveling through pumps and pipes. Zipper-designed mesh bag is reusable. The zipper is made of plastic, and it's safe for freshwater and saltwater use.