The 4 lb 1" Brominating Tablets Pail is essential for maintaining clean and sanitized pool and spa water. The pail contains 4 lbs of brominating tablets, designed to release bromine, a powerful sanitizer that kills bacteria and algae, ensuring a safe and enjoyable swimming environment. Ideal for both pools and spas, bromine remains stable even at higher temperatures, making it perfect for hot tubs. Easy to use, simply place the 1” tablets in a bromine feeder or floater, and they will slowly dissolve, providing long-lasting sanitization.