HTH® Super Algae Guard, 1 Qt.

Kill and prevent green, black and yellow algae with HTH® Super Algae Guard for swimming pools.


About This Item

HTH® Super Algae Guard is formulated to kill and prevent stubborn green, black and mustard algae and restore crystal clarity to your swimming pool. Apply this non-foaming algae guard directly to pool water – and swim just 15 minutes after use. This algaecide is compatible with all pool types including vinyl-lined pools and salt water systems.

TO USE: Add the proper dose of HTH® Super Algae Guard directly to the pool water in several places with the pump running.  Keep the pump running for several hours. After adding the product, wait at least 15 minutes before entering the pool. For best results, use Super Algae Guard in conjunction with a shock treatment.

  • Kills & prevents all algae types including green, black and mustard algae
  • Non-foaming algaecide formula destroys algae fast for crystal clear water
  • Apply directly to the pool for easy DIY pool care
  • Swim 15 minutes after applying algaecide to your pool
  • Compatible with salt water systems

kids jumping into the pool - stay clear all summer long - with HTH, it's easy. Just right.


Stop Algae Growth with HTH® Super Algae Guard

family relaxing by the pool

Works Quickly

HTH® Super Algae Guard quickly kills and prevents green, black and yellow algae so you can get back to swimming as soon as possible. 

in-deck pool

Concentrated Formula

Just 4 fl.oz. works in 10,000 gallons of water to kill algae spores and prevent regrowth. Plus, it’s compatible with chlorine, bromine, and salt water systems.

lady and kid swimming underwater

Easy to Use

Simply add the product directly to the pool in several places with the pump running. Keep the pump running for several hours.  Wait 15 minutes before entering the pool.

How to Prevent Algae Growth in Swimming Pools

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Brush & Remove Debris

To prevent algae growth, brush your pool weekly to remove any spores that have attached to the walls or steps. Trees and plants are a common source of algae spores, so trim leaves and branches back as much as possible and remove leaves and other debris from your pool right away. 

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Clean Your Filter

Your filter effectively removes dead algae spores from your pool. Use HTH® Filter Cleaner to clean all filter types and help the filtration system to work more efficiently.

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Add Chemicals

Shock your pool weekly to boost chlorine levels and keep your water crystal clear. Using an HTH® shock treatment is one of the best ways to protect your pool from algae. For best results, use an algaecide like HTH® Super Algae Guard 12 to 16 hours after the shock treatment to further prevent future algae growth.




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