CORAL ALKA PLUS is specially formulated to correct excessively low alkalinity in spas and jacuzzis.
Insufficient alkalinity leads to frequent pH fluctuations , which can cause skin and eye irritation as well as premature wear of spa components.
By maintaining alkalinity within the recommended range of 80 to 120 ppm , this product helps to stabilize pH levels over the long term , improves the effectiveness of disinfectants, and ensures clear, pleasant water.
The 1 kg format is ideal for the regular maintenance of residential spas.
Key advantages
✔️ Increases the total alkalinity of the spa water
✔️ Stabilizes pH and reduces fluctuations
✔️ Protects equipment against corrosion
✔️ Improves bathing comfort
✔️ Reduces skin and eye irritation
✔️ Easy-to-use, fast-dissolving granules
Technical specifications
CORAL brand
ALKA PLUS product
1 kg format
Granule type
Function: Increase in total alkalinity
Spa and Jacuzzi Application
Why adjust the alkalinity of your spa?
An alkalinity that is too low, below 80 ppm, causes pH fluctuations and can damage equipment.
A balanced alkalinity between 80 and 120 ppm helps maintain stable, healthy, and comfortable water.
Quick start guide
Test for total alkalinity using a test kit
Dissolve the recommended amount of CORAL ALKA PLUS in a bucket of clean water
Pour into the spa while the pump is running
Let the water circulate for about 30 minutes, then test again.
Usage tips
Always adjust the alkalinity before correcting the pH
Add the product to the water, not the other way around.
Store in a cool, dry place out of reach of children