Spa Line Calcium Plus is a calcium increaser designed to raise and maintain the correct calcium level in spa water. Insufficient calcium hardness can lead to foaming, corrosion, and damage to spa components, negatively affecting both water quality and equipment lifespan.
By increasing calcium hardness to the recommended range of 150-400 ppm, this product helps stabilize the water, prevent corrosion, and protect pumps, heaters, and other spa equipment. Spa Line Calcium Plus is easy to use and an essential part of regular spa water maintenance.
Directions for use:
Turn on the jets and pour the required amount directly into the spa water. Allow the filtration system to run for 1 to 2 hours, then re-test the water to check whether the correct level has been reached. Repeat the process if necessary until the desired hardness level is achieved. One tablespoon (15 ml) of Spa Calcium Plus increases the water hardness by 7.4 ppm per 1000 liters of water.
