Cal-Rise
€15,40
Calcium hardness increaser that restores proper water balance, reduces foam formation, and protects spa equipment from corrosion.
In stock
Cal-Rise is a calcium increaser designed to raise and maintain the correct calcium hardness in spa water. Insufficient calcium hardness can lead to foaming, corrosion and damage to spa components, affecting both water quality and equipment lifespan.
By increasing calcium hardness to the recommended range of 150–400 ppm, Cal-Rise helps stabilise the water, prevent corrosion and protect pumps, heaters and other spa equipment. It is easy to use and an essential part of regular spa water maintenance.
Directions for use
Turn on the jets and add the required amount of Cal-Rise directly to the spa water. Allow the filtration system to run for 1 to 2 hours, then retest the water to check whether the correct level has been reached. Repeat if necessary until the desired calcium hardness is achieved.
One tablespoon (15 ml) of Cal-Rise increases calcium hardness by 7.4 ppm per 1,000 litres of water.
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