If your swimming pool is yearning for some calcium, snag this 25-pound box of Star Plus Calcium Hardness Increaser. If your calcium hardness is too low, it can lead to corrosion of pool equipment and etching of plaster. If it's too high, it can lead to scaling and cloudy water. No one wants to deal with either of those. This odorless calcium chloride compound will rapidly increase the total hardness in your pool in no time.
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