Here are some situations when calcium hypochlorite is the best option for your pool.

Shocking

Calcium hypochlorite is an excellent choice for pool shock treatments. It can quickly raise chlorine levels and eliminate bacteria, algae, and other contaminants in your pool water.

Indoor Pools

Since calcium hypochlorite contains no cyanuric acid, it’s best suited for indoor pools where UV rays can’t break down chlorine levels. Alternatively, if you use calcium hypochlorite for an outdoor pool, make sure to use it at night and add CYA separately.

Low Calcium Hardness Levels

The calcium hardness levels of your pool should lie somewhere between 175 and 225 ppm for a fiberglass pool or 200-275 ppm for a concrete pool. If the levels are low, calcium hypochlorite can be a way to raise those levels slightly while also raising your chlorine levels.

Stabilizer Control

CYA helps prevent chlorine degradation due to sunlight exposure. However, excessive stabilizer levels can hinder the chlorine’s effectiveness. Calcium hypochlorite can be used when stabilizer levels are too high, as it does not contribute to the accumulation of cyanuric acid. By using calcium hypochlorite in these situations, pool owners can restore the balance between chlorine and stabilizer, optimizing the disinfection process.