WEC ORNMT WONDER SHELL SUPER
Weco Wonder Shell Is Great For Ph Control, Calcium Carbonate, Water Hardness Control. Contains Calcium Carbonate; Sodium Thiosulfate; Major, Minor, And Trace Elements Including Magnesium Sulfate. Magnesium And Calcium Been Proven To Help Fish During Stress And To Help Prevent Disease Due To Acid Buildup In The Body.