Zeolite is a natural mineral formed when volcanic ash settles on water beds such as oceans or lakes, where a chemical reaction with saltwater forms a glass stone like substance.  Zeolite is highly porous, allowing water to pass through the stone where a chemical exchange takes place.  Highly charged ions from the zeolite exchange with ammonia in the water, resulting in the removal of this ammonia. Ammonia in high concentrations can be lethel to aquatic fish so chemizee can be an ideal part of your filtration. 

Key Features:

• Removes harmful ammonia from your aquarium
• Made from natural minerals
• Suitable for cannister, internal and wet/dry filtration
• Comes with FREE netting bag