6% Ultra unscented bleach adds 6ppm to every 10,000 gallons.

SHOCK is a verb - you use chlorine to shock - there are granular forms of chlorine (hypo-cal) but it adds calcium as well as chlorine.

Most people here shock their pools using plain old bleach. It tends to be cheaper and doesn't add unwanted chemicals.

Follow Duraleigh's instructions - that is shocking.