GLB Supersonic 1lb.

Is your pool water turning green, cloudy, or algae-filled — right when you’re ready to swim? GLB Supersonic Pool Shock 1 lb is a powerful, fast-acting chlorine shock treatment designed to quickly restore water clarity, eliminate algae, and destroy organic contaminants that standard sanitizers leave behind. Whether you’re opening your pool for the season, recovering from heavy rain, or fixing a neglected pool, Supersonic delivers rapid results you can see — often within hours. Solves These Common Pool Problems Green or algae-infested pool water Cloudy or dull water clarity Chlorine demand / sanitizer burnout Heavy swimmer load contamination Pool opening water issues Organic waste & debris buildup Supersonic works fast to oxidize contaminants and restore proper sanitizer performance so your chlorine can work efficiently again. Fast-Acting Supersonic Performance This high-powered shock formula dissolves quickly and gets to work immediately, making it ideal for: Emerg