Regular household liquid bleach contains the same chemical, chlorine, found in standard pool chlorine sanitizers. The only difference between bleach and pool chlorine is the amount of chlorine found in bleach, which ranges from 5 to 10 percent. In fact, bleach is often recommended for emergency water disinfection, so reasoning suggests it can work well in a kiddie pool. However, not much bleach is required to properly sanitize a given amount of water.
Cal Hypo treats 10,000 gallons per pound. It is recommended to first pre-dissolve the shock in a bucket of water before adding it to the pool. This is to avoid bleaching a pool liner, or clouding the water. Cal-Hypo shock is a 68% available calcium hypochlorite, and is a non-stabilized pool shock. It kills fast, but leaves behind a “shock dust”, and overuse can raise your calcium hardness levels as the chlorine separates from the binders.