Bioguard Saltscapes - Sunshield Stabilizer 6.5 (lbs) BioGuard SaltScapes Saltwater - SunShield Stabilizer 6.5 Pounds Your salt cell generates unstabilized chlorine which will diminish rapidly when exposed to sunlights UV rays. SaltScapes SunShield Stabilizer protects generated chlorine from sunlight, allowing it to last longer and be less demanding on your system. SunShield Stabilizer dissolves quickly and can be added directly to your pool water, unlike alternative stabilizers and conditioners. FOR BEST RESULTS: Test stabilizer monthly and maintain a minimum of 30 ppm. One bottle will treat up to 26,000 gallons of pool water.