Photo of Prevent, a pool product used to kill algae in swimming pools


Great product to control algae growth effectively and economically. Ideal for small-medium sized swimming pools.

Product Details


  • 50% Quantum based algaecide; strong solution
  • Non-staining, low foaming solution
  • Compatible with all forms of sanitizer and oxidizing systems
  • pH neutral solution for pools
  • Swim immediately after application


  • Economical general-purpose algaecide
  • Great algae killer
  • Reduces pool upkeep maintenance (and costs!)


  • For best performance, pH should range between 7.2 and 7.6. Alkalinity 80-120 ppm
  • Initial treatment: Add 5 ounce per 25,000 gallons of water
  • Maintenance treatment: Add 5 ounces per 10,000 gallons of pool water weekly
  • When algae is extensive: Add 32 ounces per 25,000 gallons of water. Superchlorine pool water 1 hour before or after application

Available Sizes

1 qt bottle

Product Downloads

Related Products

Photo of ProTeam Liquid UV Shield, a pool product that protects your pool from UV rays

Liquid UV Shield

Picture of Winter Mix, a pool chemical used to prepare swimming pools for the winter

Winter Mix

Photo of Spa Calcium Up, a spa product used to increase the amount of calcium in your spa

Spa Calcium Up