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  • Pool Algaecides

Collection: Pool Algaecides

Prevent and treat green, yellow and black algae with algaecides for every pool type. Shop preventive formulas and fast-acting treatments from GLB, Pool Breeze, Applied Biochemists, AlgaeShield, Natural Chemistry and Coral Seas.

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  • SeaKlear SeaKlear 90-Day Algae Prevention and Remover, 1 gal 1 gal

    SeaKlear 90-Day Algae Prevention and Remover, 1 gal – Three-Month Algae Prevention

    Sale

    SeaKlear 90-Day Algae Prevention and Remover, 1 gal – Three-Month Algae Prevention

    Vendor:
    SeaKlear
    Regular price $72.99
    Sale price $72.99 Regular price $77.41
    Unit price /  per 
    Sale
  • Natural Chemistry Pro Series Algae Break 90, 1 gal

    Natural Chemistry Pro Series Algae Break 90, 1 gal – Up to 90-Day Algae Prevention

    Sale

    Natural Chemistry Pro Series Algae Break 90, 1 gal – Up to 90-Day Algae Prevention

    Vendor:
    Natural Chemistry
    Regular price $68.99
    Sale price $68.99 Regular price $72.92
    Unit price /  per 
    Sale
  • Natural Chemistry Algae Max Algaecide

    Natural Chemistry Algae Max Algaecide – Pool Water Algae Control Treatment

    Sale

    Natural Chemistry Algae Max Algaecide – Pool Water Algae Control Treatment

    Vendor:
    Natural Chemistry
    Regular price $23.99
    Sale price $23.99 Regular price $26.01
    Unit price /  per 
    Sale
  • Coral Seas Yellow Out Algae Treatment, 20 lb – with My Garden Pool 20 Ct Test Strips and Scum Sponge

    Coral Seas Yellow Out Algae Treatment, 20 lb – Includes My Garden Pool 20 Ct Test Strips and Scum Sponge

    Sale

    Coral Seas Yellow Out Algae Treatment, 20 lb – Includes My Garden Pool 20 Ct Test Strips and Scum Sponge

    Vendor:
    Coral Seas
    Regular price $179.99
    Sale price $179.99 Regular price $189.65
    Unit price /  per 
    Sale
  • Coral Seas Yellow Out Shock Enhancing Algae Treatment, 2 lb

    Coral Seas Yellow Out Shock Enhancing Algae Treatment, 2 lb – Shock-Enhancing Algae Treatment

    Sale

    Coral Seas Yellow Out Shock Enhancing Algae Treatment, 2 lb – Shock-Enhancing Algae Treatment

    Vendor:
    Coral Seas
    Regular price $18.99
    Sale price $18.99 Regular price $20.88
    Unit price /  per 
    Sale
  • Natural Chemistry Algae Break 90, 32 oz

    Natural Chemistry Algae Break 90, 32 oz – Up to 90-Day Algae Prevention

    Sale

    Natural Chemistry Algae Break 90, 32 oz – Up to 90-Day Algae Prevention

    Vendor:
    Natural Chemistry
    Regular price $41.99
    Sale price $41.99 Regular price $44.57
    Unit price /  per 
    Sale
  • Jack's Magic Jack's Magic The Yellow Stuff Algaecide, 2 lb 2 lb

    Jack's Magic The Yellow Stuff Algaecide, 2 lb – Pool Algae Control

    Sale

    Jack's Magic The Yellow Stuff Algaecide, 2 lb – Pool Algae Control

    Vendor:
    Jack's Magic
    Regular price $31.99
    Sale price $31.99 Regular price $34.64
    Unit price /  per 
    Sale
  • Applied Biochemists Applied Biochemists Yellowtrine 3 lb container

    Applied Biochemists Yellowtrine, 3 lb – Mustard Algae & Deposit Treatment

    Sale

    Applied Biochemists Yellowtrine, 3 lb – Mustard Algae & Deposit Treatment

    Vendor:
    Applied Biochemists
    Regular price $44.99
    Sale price $44.99 Regular price $48.36
    Unit price /  per 
    Sale
  • Applied Biochemists Applied Biochemists Pooltrine 60 32 fl oz container

    Applied Biochemists Pooltrine 60, 32 fl oz – Algae & Deposit Control

    Sale

    Applied Biochemists Pooltrine 60, 32 fl oz – Algae & Deposit Control

    Vendor:
    Applied Biochemists
    Regular price $23.99
    Sale price $23.99 Regular price $26.26
    Unit price /  per 
    Sale
  • Applied Biochemists Applied Biochemists Algaetrine 32 fl oz bottle

    Applied Biochemists Algaetrine, 32 fl oz – Green & Mustard Algae Control

    Sale

    Applied Biochemists Algaetrine, 32 fl oz – Green & Mustard Algae Control

    Vendor:
    Applied Biochemists
    Regular price $22.99
    Sale price $22.99 Regular price $24.90
    Unit price /  per 
    Sale
  • Applied Biochemists Applied Biochemists Black Algaetrine 32 fl oz container

    Applied Biochemists Black Algaetrine, 32 fl oz – Black Algae Treatment

    Sale

    Applied Biochemists Black Algaetrine, 32 fl oz – Black Algae Treatment

    Vendor:
    Applied Biochemists
    Regular price $34.99
    Sale price $34.99 Regular price $37.78
    Unit price /  per 
    Sale
  • Applied Biochemists Applied Biochemists Swimtrine Plus 1 gallon container

    Applied Biochemists Swimtrine Plus, 1 gal – Green & Mustard Algae Control

    Sale

    Applied Biochemists Swimtrine Plus, 1 gal – Green & Mustard Algae Control

    Vendor:
    Applied Biochemists
    Regular price $83.99
    Sale price $83.99 Regular price $89.19
    Unit price /  per 
    Sale
  • Applied Biochemists Applied Biochemists Swimtrine Plus 16 fl oz container

    Applied Biochemists Swimtrine Plus, 16 fl oz – Green & Mustard Algae Control

    Sale

    Applied Biochemists Swimtrine Plus, 16 fl oz – Green & Mustard Algae Control

    Vendor:
    Applied Biochemists
    Regular price $53.99
    Sale price $53.99 Regular price $56.94
    Unit price /  per 
    Sale
  • Coral Seas Green Aid Green to Clean 2 lb

    Coral Seas Green Aid Green to Clean, 2 lb – Algae Cleanup Treatment for Pools

    Sale

    Coral Seas Green Aid Green to Clean, 2 lb – Algae Cleanup Treatment for Pools

    Vendor:
    Coral Seas
    Regular price $15.99
    Sale price $15.99 Regular price $17.47
    Unit price /  per 
    Sale
  • GLB Algimycin 2000 Algaecide 32 FL OZ 71104A with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 4 Pack

    GLB Algimycin 2000 Algaecide 32 FL OZ 71104A with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 4 Pack

    Sale

    GLB Algimycin 2000 Algaecide 32 FL OZ 71104A with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 4 Pack

    Vendor:
    GLB
    Regular price $103.99
    Sale price $103.99 Regular price $109.76
    Unit price /  per 
    Sale
  • GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 12 Pack

    GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 12 Pack

    Sale

    GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 12 Pack

    Vendor:
    GLB
    Regular price $207.99
    Sale price $207.99 Regular price $219.39
    Unit price /  per 
    Sale
  • GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 2 Pack

    GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 2 Pack

    Sale

    GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 2 Pack

    Vendor:
    GLB
    Regular price $46.99
    Sale price $46.99 Regular price $49.70
    Unit price /  per 
    Sale
  • GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 4 Pack

    GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 4 Pack

    Sale

    GLB Aqua Silk Algaecide 32 FL OZ 71267 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 4 Pack

    Vendor:
    GLB
    Regular price $79.99
    Sale price $79.99 Regular price $84.26
    Unit price /  per 
    Sale
  • Haviland Durachlor Algae Kil CB 7.4 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Haviland Durachlor Algae Kil CB 7.4 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Sale

    Haviland Durachlor Algae Kil CB 7.4 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Vendor:
    Haviland
    Regular price $32.99
    Sale price $32.99 Regular price $34.99
    Unit price /  per 
    Sale
  • Haviland Durachlor Combat Extra 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Haviland Durachlor Combat Extra 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Sale

    Haviland Durachlor Combat Extra 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Vendor:
    Haviland
    Regular price $27.99
    Sale price $27.99 Regular price $29.99
    Unit price /  per 
    Sale
  • Haviland Durachlor Combat 60 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Haviland Durachlor Combat 60 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Sale

    Haviland Durachlor Combat 60 1 QT with My Garden Pool Scum Socks, Test Strip & Pool-IQ AI Assistant

    Vendor:
    Haviland
    Regular price $33.99
    Sale price $33.99 Regular price $35.99
    Unit price /  per 
    Sale
  • AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 1 Pack

    AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 1 Pack

    Sale

    AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 1 Pack

    Vendor:
    AlgaeShield
    Regular price $27.99
    Sale price $27.99 Regular price $30.36
    Unit price /  per 
    Sale
  • AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 12 Pack

    AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 12 Pack

    Sale

    AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 12 Pack

    Vendor:
    AlgaeShield
    Regular price $239.99
    Sale price $239.99 Regular price $253.12
    Unit price /  per 
    Sale
  • AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 2 Pack

    AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 2 Pack

    Sale

    AlgaeShield Algaecide 32 FL OZ 12774 with My Garden Pool 7 in 1 Test Strips and Measuring Cup, 2 Pack

    Vendor:
    AlgaeShield
    Regular price $49.99
    Sale price $49.99 Regular price $53.61
    Unit price /  per 
    Sale
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