We use organic coconuts to create our carbon. 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.
We do not advise purchasing carbon from the fish department of your local pet supply store. No regulations are placed on carbon that is imported into the United States. The labels typically indicate to wash thoroughly and the smaller diameter of the carbon can more easily pass through the filter tube into your water. This releases impurities into the water, which are not healthy to inhale.