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• Release Time：2020-06-12 14:00
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【Summary】Calcium hypochlorite—or what most people just call “cal hypo”—is one of various types of chlorine you can buy, and it looks exactly how you’d expect pool chlorine to look. It’s mostly commonly sold as a white, chlorine-smelling powder/granules, which are then poured directly into the pool water, or sometimes via the pool skimmer. It has a highly alkaline pH level at around 11-12, and contains anywhere from 65-75% free available chlorine. These are typically sold in 1lb bags, but it’s worth considering a bulk-buy if you’re planning to use cal hypo regularly. It’s also less commonly found in tablet form. It looks like a white hockey puck in either 1″ or 3″ sizes, which is then dissolved and drip-fed in a specialized feeder. It has a slightly lower pH level of around 9. Regardless of physical form, neither the powder or tablet versions of calcium hypochlorite contain pool stabilizer (cyanuric acid) to protect against the sun, but instead contain calcium which raises your pools calcium hardness level over time.