Reptology Tuff-Shell M.D.

A medicated sulfa block and shell conditioner. Provides necessary calcium for healthy shell development. Helps prevent common bacterial and fungal diseases. Neutralizes and conditions water. An excellent source of essential minerals.

Directions: Use one Tuff Shell per 15 gallons of water. Replace after 45 days or after complete water change if dissolved.

Ingredients: Sulfathiozole, Calcium sulfate, Calcium carbonate, Magnesium sulfate, Sodium chloride, Ferrous sulfate, Zinc sulfate, Copper sulfate, Thiamine hydrochloride (source of vitamin B-1), Riboflavin (source of vitamin B-2), Pyridoxine hydrochloride (source of vitamin B-6)