CALCIUM Plus CORAL is formulated to correct excessively low calcium hardness in spas and small pools.
Water low in calcium becomes aggressive and corrosive , which can damage surfaces , metal components , and reduce the lifespan of equipment.
Thanks to its fast-dissolving granular formula , this product effectively restores the mineral balance of water and helps maintain ideal hardness between 200 and 300 ppm.
The 800g size is perfect for the regular maintenance of residential spas and smaller pools.
Key advantages
✔️ Rapidly increases calcium hardness
✔️ Protects equipment and surfaces against corrosion
✔️ Reduces the risk of aggressive water
✔️ Improves water stability
✔️ Easy-to-dissolve granules
✔️ Ideal for spas and small pools
Technical specifications
CORAL brand
CALCIUM Plus product
800g format
Granule Type
Function: Increases calcium hardness
Spa and small pool application
Why adjust calcium hardness?
Water hardness that is too low, below 150 ppm, makes it corrosive and can damage equipment.
A balanced hardness level between 200 and 300 ppm protects equipment and stabilizes water
Quick start guide
Test calcium hardness using a test kit
Dissolve the recommended amount of CORAL CALCIUM Plus in a bucket of clean water
Pour evenly into the water while the pump is running
Let it circulate for about 30 minutes, then test again.
Usage tips
Add the product slowly to avoid local supersaturation
Always dissolve before adding if required
Store in a cool, dry place out of reach of children
