Robelle Winter Pool Closing Shock for Swimming Pools, 2 lbs

Robelle Winter Shock is a powerful oxygen-based oxidizer. When used regularly this product will help eliminate contaminants introduced by bathers and environmental factors like rain and wind. This product will not raise chlorine levels or produce combined chlorine. Robelle Winter Shock is gentle on pool surfaces. It dissolves quickly and will not bleach or fade vinyl liners or painted surfaces. Robelle winter Shock restores sparkle and clarity to pool water. It will not increase calcium hardness or stabilizer levels. Robelle Winter Shock contains no chlorine or other disinfectants. For routine disinfection of pool water use 3-inch giant tabs or Dichlor granule.