Boyd's Chemi-Pure is unlike any mechanical or chemical filtration material you have used before. Whether you are a fresh water or salt water enthusiast, it is something you will have to use, see, and test for yourself in order to believe the results. Chemi-Pure comes already packed in pure polyester filter bags in sealed plastic bottles which are termed one unit each also available in ½ units of 5oz. One unit (10oz) is recommended for up to 40 gallons of water and which remains completely active for 4 to 6 months with no regeneration or cleaning required. We recommend that, in cases of heavy bio-load, that each unit of Chemi-Pure be replaced within 3 to 4 month period. Each bag of Chemi-Pure is simply removed from the plastic bottle and installed directly in your filter. It is pre-moistened and should be rinsed prior to use.

The activated carbons used in Chemi-Pure are the finest most powerful, and longest lasting that money can buy, designed specifically to absorb and absorb any contaminants in solution up to an unbelievable 50% of their total weight. In fact, these are the same highly expanded and super activated carbons, which remove radioactive contamination from the air from re-breathing by personnel of US Navy nuclear submarines. On a scale from 1 to 10, the carbons used in Chemi-Pure would have to rate a 10 whereas many of the activated carbons available in "across the counter" sales in tropical fish stores or pet shops around the country would rate a maximum of 3. The plain animal bone charcoal sold for aquariums would barely rate a 1 on such a scale.