Weco Wonder Shell Natural Minerals, Large

Helps keep aquarium clear and maintains stable pH levels Adds necessary minerals while removing chlorine Great for goldfish, livebearers, cichlids and more Weco Wonder Shells provide magnesium and calcium, which have been proven to help fish during stress and to prevent disease due to acid buildup in the body. These shells instantly remove chlorine and chloramines from tap water while also clearing cloudiness. Scour inner glass walls with a Wonder Shell to remove scum and to deter its return.Sizing:Small: Bowls up to 1 GallonLarge: Tanks up to 5 GallonsSuper: Tanks 10-15 GallonsGiant: Fish Ponds