Powerful Sanitizer: 90% available stabilized chlorine and 98.6% Trichloro-S-Triazinetrione (TriChlor). Eliminates bacteria and prevents algae growth in hot tubs, spas, above ground or in-ground swimming pools. Balances Chlorine Levels: 1-inch size helps to avoid inconsistent chlorination. Dissolve at a faster rate when used in floating feeders and automatic chlorinators. Tablets weigh approximately 0.5 ounces. In The Swim 1-inch chlorine tablets make pool care simple by delivering 90% stabilized chlorine in a compact, easy-to-use size that dissolves quickly and evenly to keep your water clean, clear, and safe. Whether you’re maintaining a spa, a small above-ground pool, or even a large in-ground pool that needs faster chlorination than bulky 3-inch tablets can provide, these 0.5-oz tabs give you reliable sanitization every time. Designed for use with floating feeders or automatic chlorinators, they offer precise dosing control while protecting your pool surfaces and equipment.