Weco Wonder Shell is great for ph control, calcium carbonate and water hardness control. Contains Calcium carbonate, sodium thiosulfate, and trace elements including magnesium sulfate.
Magnesium and calcium have been proven to help fish during stress and to help prevent disease due to acid buildup in the body.
These shells help remove chlorine and chloramines from tap water instantly and condition water for the benefit of all aquarium life. With these shells, cloudy water will clear right up. Your fish will have more reproductive vigor and will spawn more readily. Scour inner glass walls with Wonder Shell to remove scum and to deter its return.
Giant size and Super Size are available for pond use.
For Quart bowls use one small WONDER SHELL (from 3 pack)
For Gallon bowls use 2 Small WONDER SHELLS
For 5-gallon aquarium use one large WONDER SHELL