🏊♂️ Dive into Crystal Clear Waters! Pair with HTH 6-Way Test Strips for optimal water balance and chlorine levels. Experience up to a week of protection with slow-dissolving tabs that keep your pool sparkling clean. Specially designed to withstand sunlight for extended chlorine life, ensuring your pool stays safe. Perfect for all pool types, including saltwater systems—just toss in and relax! Enjoy a pristine swimming experience with HTH Chlorine Tabs that eliminate harmful bacteria and algae. Slow Dissolving Formula Crystal Clear Water Bacteria & Algae Killer HTH42047 Pool Care 1" Chlorine Tabs are a powerful swimming pool sanitizer designed to eliminate bacteria and algae while keeping your water clean and clear. With a slow-dissolving formula that lasts up to a week, these tabs are compatible with all pool types and are perfect for maintaining optimal chlorine levels.