Estimate shipping
A small block that sits in a turtle's water and does two jobs as it slowly dissolves: it neutralises acidic water, and it releases dissolved calcium. Two ingredients, calcium sulfate and magnesium chloride — nothing else. It is a supplement, not a substitute for the things that actually build shell: a calcium-adequate diet, UVB lighting and proper basking temperatures.
Benefits
- 20–24% calcium — released gradually into the water.
- Neutralises acidic water — conditions the tank at the same time.
- No dosing required — drop it in and let it go.
Ingredients
Calcium sulfate, magnesium chloride.
How to use
Place the block in the turtle's water. Replace when it has dissolved away. Works alongside, not instead of, UVB lighting and a proper basking spot — without those, calcium in the water will not fix shell problems.
Pair with a ReptiSun UVB tube and Turtle Dock. More in Reptile Supplies.