- Manganese dioxide is a natural filter media that effectively removes iron, manganese and sulfur odor from well water. - Manganese zeolite is a synthetic gel mineral composed of hydrated aluminosilicates of sodium, potassium, calcium and barium. Manganese zeolite is used in conjunction with filtration methods to facilitate the removal of iron, manganese, hydrogen sulfide and other substances from water. welcome to order our store, 0.98x_watersupplies We ensure that all products are inspected before packing and shipping. *We do not have control over delivery once the courier pick up the order *Delivery of an order may vary depending on courier led time. *Only the courier is responsible during delivery period. *Please check your order right away once you receive our package. *If there are issue.please feel free to sent us a message.. Rate us 5 stars if you are satisfied with us . Giving us 1 star and a negative comments won't fix your concern.Kindly negotiate first for any problems. We are responsible GOD bless kind customer.