We do not advise going to your local pet supply store and buying carbon in the fish department. No regulations are placed on carbon that is imported into the United States. The labels usually indicate to just wash throughly. Most of these individual carbon pieces are smaller in diameter, and can pass through the filter tube into your water. As the carbon soaks in your water all of the impurities are released into your water, which is not healthy.
To create our carbon, first we only use 100% Virgin Coconuts. Then every virgin coconut shell undergoes a 2,000° steam activation process. During this activation process millions of pores are created on the surface of the carbon, thus increasing the total surface area.