The greatest single discovery since fishkeeping began  

Boyd's Chemi Pure

Longer Life - Fish often live three to four times longer than in any other closed system, fresh or marine. Necessary Organisms - Allowed growth with no danger of pollution. Removes Offensive Odors Real Sea Water or Artificial Sea Water Removes Toxic Elements - Including Copper & Phenol No water changes Nescessary - for at least 5 years (length of test only) .  Crystal Clear Water - Always sparkling blue-white water No Cleaning - Necessary for health of fish. Constant PH - Always within the safe range No Osmotic Shock - 90% eliminated Economical - Replacement only every four to six months makes initial cost very low - eliminates expensive water changes - fewer losses. When fresh water or marine fish and invertebrates are taken from their natural habitat and maintained in a captive condition in an artificial closed system, water quality becomes the most critical factor affecting their health, longevity, and survival. With the addition of Chemipure many of our customers enjoy fewer necessary water changes. It's ability to sustain and stabilize higher water quality over longer periods makes it quite popular win both fish only and reef tanks. CHEMI-PURE removes the ammonia and other nitrogenous waste products so harmful to both marine and fresh water fish. Another words Chemi-pure brings the natural sea into your home. Marine fish - Soft corals - Crustose Coralline Algaes - Caulerpas - Gorgonias - Seafans - other invertebrates and fish of all species thrive and grow luxuriously with no water change necessary using real sea water or the better imported mixes. Not just a company a claim, but a fact, experienced by thousands of Chemi-pure users. In fact, salt water fish have spawned repeatedly in 5 year old water. Chemipure does not remove trace elements and is the only filter medium which aids in the natural balance of positive and negative charges, with an emphasis on the beneficial negative ion. Chemipure comes packaged in pure polyester filter bags in sealed plastic bottles, called 1 unit, one of which is recommended for up to 40 gallons of water, and which is completely active for 4-6 months with no 'regeneration' or cleaning required and is cheaper than carbon or pads.