Zodiac Calcium Down
Calcium Down decreases calcium hardness in swimming pools.
• Essential for water balance
• Helps protect pool surfaces and equipment
370g/L HYDROXYETHYLIDENE DIPHOSPHONIC ACID COMPLEX.
TO DECREASE CALCIUM HARDNESS:
1 Litre will reduce calcium by 100ppm per 40,000 litres.
Dosage rates indicated are a guide only.
Please refer to the label on the packaging for further instructions.
Tip: If hardness levels are reading very high (>800ppm), check if the pool is a Magnapool.
Magnesium from the minerals can interfere with some hardness tests. Otherwise check if the source water is bore water.