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The ideal range is 200 - 400 ppm
Right-sized salt chlorination
Start by pressing your finger over the air hole at the top of the vacuum when it is out of the water
*Maximizes the effectiveness of other spa chemicals
Vinyl Shock is a 4 in 1 application
Aqua-Guard Calcium Up 6kg Water Testing The ideal range is 200Aqua Guard Calcium Up Calcium Increaser Calcium increaser will raise the calcium hardness in swimming pool water. The ideal range is 200 400 ppm. Calcium increaser is completely soluble in water. It is safe to swim in water immediately after application of calcium increaser. Prevents corrosion of pool equipment Prevents etching of pool surface Can be used in saltwater pools Raises calcium hardness
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