Keep your pool water perfectly balanced with BioGuard Pool Instant Stabilizer 100. This quick dissolving liquid is easy to apply and prevents free chlorine residual loss due to sunlight, ensuring your pool stays clean and clear. It also improves the efficiency of chlorine generators and is compatible with chlorine, Mineral Springs®, and saltwater systems. With 1 gallon of BioGuard Instant Stabilizer 100 raising CYA levels by 32 ppm per 10,000 gallons, it's the ideal choice for smaller pools and pools without skimmers. Keep your pool water in top condition with BioGuard Pool Instant Stabilizer 100.