high efficiency culture improve immunity Stable water quality Long service life the Role of nitrifying bacteria Decompose fish excrement and residual foods, improve immunity from ornamental fish, eliminate chlorine and heavy metals in water to prevent growth of algae. The success of the establishment of nitrifying bacteria in the aquarium is directly linked to the clarity and stability of the water quality of the aquarium. Neutralize the bad smells of water: High-efficiency EM microbial ceramic balls in natural clay inhibit the smell of chlorine and reduce the smell of iron water from the tap. Finally found water with the smell of water Ideal choice except activated charcoal Binchotan Reduce limestone deposits: Please note that EM ceramic tubes are not descaling agents, but they will change the structure of limestone and prevent it from sticking to coffee machines, glass bottles, even to washing machines and Dishwasher. Note: Please follow the suggestions for use we sent to you by e-mail. Economy and Ecology: Finishes plastic bottles, mineral water packages or even filters for brand glass water bottles. Your EM pipes can be reused provided they are soaked in vinegar during the night, then dried in the sun for 12 hours. Zero wrapping waste: Kraft paper bags without plastic, recyclable and compostable. Powerful antioxidant capacity: Ceramic EM pearls have an antioxidant capacity, they not only have the ability to avoid oxidation, but can also eliminate existing oxidation. By reducing limestone deposits and avoiding rust in coffee machines, kettles, etc., you can protect your household appliances to reduce their lifespan and extend their service life. Product specifications: diameter * Height 18 * 18cm (25 pieces)