Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

GLB 100-lb

  • 100% calcium hypochlorite (65% available chlorine) granular

  • Fast-dissolving, kills bacteria and algae, destroys organic waste

  • One pound treats 10,000 gallons

Best Price. Guaranteed
Find a lower price on an exact item? We'll match it. Some exclusions apply.
Learn More
FREE Returns
Return it in store or ship it back for free. Eligibility rules apply.
Learn More
Pay Your Way
Credit card, PayPal or Buy Now, Pay Later options available at checkout. Your choice.
Learn More