WATER CRYSTAL Swiftly deodorize aquarium water New cleansing formula for aquarium water Clear up water within 24 hours without Premium USA Formula Easy to use and convenient Net Wt.: 138ml Marine or Fresh water This product is a multi hydroxy complex consisting of inorganic and organic macromolecules, which settle various suspended matter water and make dirty clear in short time. It can also remove odor, prevent water quality worsen and keep water clear .It is safe and effective with no side effects to any fish and float grass. Ingredients: Poly Aluminum chloride 2.50%, Edetate Disodium 1.0%, Purified Water 96.5% Direction For Use: Use 20ml of this product per 100ml water, open the filter system , and apply one time per week Made in China