Bonuses Water Purifier is a compound of inorganic macromolecule with high absorbability.Once add it in the tank,it will undergo a rapid process of electrochemistry,coagulation,absorption,precipitation and other physical chemistry.The water quality will become better.If you want to keep the water in such good quality condition for a long time,please add Bonuses Super Nitrifying Bacteria regularly and postpone replacing water ,which can keep the water quality stable.Using Bonuses Water Purifier in a new tank ,the effect would be more obvious.