It is possible to use Clorox bleach in a swimming pool. Both chlorine tablets sold specifically for pool use and Clorox bleach contain the same chemical, chlorine. However, it is extremely important to use extra safety precautions when using Clorox.
For swimming pools, chlorinated water is one of the most popular ways to keep down levels of algae and bacteria. According to clorox.com, chlorine levels in the water should not exceed 3ppm (parts per million) as measured by a pool testing kit. To reach these levels, very little chlorine is needed. For example, if a circular pool has water 3 feet deep and is 15 feet in diameter, only 5 cups are needed to reach the appropriate chlorine levels.
Although liquid bleach and chlorine tablets both contain the same chemical, it is extremely important to know what other chemicals are contained in both products. Do not ever put chemicals in the pool that are not recommended for use in pools, and do not substitute products such as cleaners with bleach for plain, liquid bleach. Know the type of filtration system in the pool, and be sure to avoid chemicals that can react with other cleaning chemicals and cleaning systems. Always test the pool water with a pool testing kit before entering, and do not enter the pool if chlorine levels are above 3ppm. Wait until the sunlight breaks the chlorine down, and test the water again.