1 lb. 73% Calcium Hypochlorite Chlorinating Shock (24-Pack)

GLB Super Sonic Shock dissolves faster. An extra-powerful start-up and maintenance shock that helps to improve the appearance of your pool by removing and preventing algae growth. When used as directed . GLB Super Sonic Shock removes organic waste and Raises chlorine level . producing sparkling . clean swimming pool water. Kills bacteria . controls algae . destroys organic contaminants and restores crystal clarity. This is the ideal product for a super-fast acting chlorine boost to give your pool shocking clarity. 73% Calcium Hypochlorite.