HTH® Algae Guard 30

HTH® Algae Guard 30 is a concentrated, non-foaming algaecide product that, when used regularly, will prevent and kill the growth of green, black and yellow algae.


About This Item

HTH® Algae Guard 30 is 3x stronger than HTH® Algae Guard 10 – formulated to kill and prevent stubborn green, black and mustard algae. Apply this non-foaming algae guard directly to pool water – and swim just 15 minutes after use.

  • 4-IN-1 ACTION
  • Kills and prevents green, black and mustard algae
  • Weekly use prevents algae
  • Fast acting
  • Swim immediately
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Stop Algae Growth with HTH® Algae Guard 30

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Works Quickly

The HTH® Algae Guard 30 quickly kills and prevents green algae so you can get back to swimming as soon as possible. Use regularly for maximum effectiveness.

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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.

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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

Clean your filter regularly to effectively remove 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. One of the best ways to protect your pool from algae is to use a regular shock treatment, then follow up with a weekly dose of an algaecide like HTH® Algae Guard 30.




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