HTH™ Pool Care Algae Guard Advanced

All-in-One Pool Algaecide

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HTH™ Pool Care Algae Guard Advanced

All-in-One Pool Algaecide

HTH™ Pool Care Algae Guard Advanced is a professional-strength pool algaecide designed to destroy and prevent even the toughest pool algae. 

  • This fast-acting, non-foaming algaecide for pools targets green, black, and mustard algae caused by warm weather, poor circulation, or low chlorine levels.
  • Add it directly to your pool water and swim immediately! No waiting, no hassle.
  • Compatible with all pool types, including vinyl-lined and saltwater systems. 

This reliable swimming pool algae cleaner helps keep your water beautifully clear all season long.

You're All Clear with HTH™!

Product Benefits

Powerful All In One Algaecide

HTH™ Algae Guard Advanced effectively destroys and prevent pool algae. This includes mustard, black and green algae pool treatment.

Non Foaming Algaecide

Add HTH™ Algae Guard Advanced directly to your swimming pool water and swim right away!

Compatible with All Pools

This all in one pool algaecide is great for all swimming pools including vinyl-lined and salt water systems.

You’re all clear with HTH™

For best results, use HTH™ Algae Guard Advanced as part of your weekly maintenance routine. Works great with HTH™ Shock products.

How to Use

How to Use

Why You Should Use This Product: Algae Guard Advanced is a fast‑acting, non‑foaming algaecide designed to destroy and prevent green, black, and mustard algae. When used regularly, it helps keep pool water clear and suitable for all pool types, including saltwater pools.

Before Use: Test and balance pool water before application. Always add chemicals separately and keep the pump running while adding this product.

Initial Dose

Add this product at the beginning of the season or if algae growth is present.

Pool Size (Gallons) Dosage (Fl Oz)
1,000 0.4
2,500 1
5,000 2
10,000 4
15,000 6

Maintenance Dose

Add this product every 3–5 days to help prevent algae growth.

Pool Size (Gallons) Dosage (Fl Oz)
1,000 0.1
2,500 0.25
5,000 0.5
10,000 1
15,000 1.5

Visible Algae

If visible algae is present, apply the Initial Dose and vacuum the pool after 24 hours to remove algae debris. Repeat treatment if algae persists or reappears. Once algae is eliminated, resume the Maintenance Dose.

Closing Your Pool

When the swimming season is over, add one Initial Dose of this product. This helps control algae growth during winter and supports easier pool opening the following season.

Ingredients

Ingredients

Active Ingredients:

Alkyl (60% C14, 30% C16, 5% C12, 5% C18) Dimethyl Benzyl Ammonium Chlorides: 30%

Alkyl (68% C12, 32% C14) Dimethyl Ethylbenzyl Ammonium Chlorides: 30%

Other Ingredients: 40%

Total: 100%

Safety, Storage, and Disposal

Safety, Storage & Label Guidance

Use this product only as directed and avoid contact with eyes and skin.

Wear protective eyewear and gloves when handling.

Do not mix with other chemicals.

Store in its original, tightly closed container and keep out of reach of children.

For complete safety precautions, first aid instructions, environmental warnings, and disposal details, always refer to the product label.

Frequently Asked Questions

  • What is HTH™ Algae Guard Advanced used for?

    HTH™ Algae Guard Advanced is a weekly-use algaecide that prevents green, yellow (mustard), and black algae from forming in pool water. It is designed for regular maintenance to keep pools algae-free throughout the swim season.

  • How often should I add algaecide to my pool?

    For maintenance, add HTH™ Algae Guard Advanced once a week during the swim season or after every shock treatment. Increase the frequency during hot weather, heavy rain, or periods of heavy pool use, when algae risk is greatest.

  • How do I use HTH™ Algae Guard Advanced in my pool?

    Add the recommended weekly dose directly to the pool with the pump running, distributing it around the pool's edge. Chlorine levels above 5 ppm can deactivate algaecide, so wait 24 hours after shocking before adding HTH™ Algae Guard Advanced. For maintenance, apply it once a week throughout the swim season. For a mild algae problem, use it with shock for better algae control.

  • What types of algae does HTH™ Algae Guard Advanced prevent?

    HTH™ Algae Guard Advanced is formulated to prevent and treat green, yellow (mustard), and black algae. Its higher concentration compared with HTH™ Algae Guard 10 provides broader and longer-lasting protection—especially during hot weather or for pools that have had algae problems in the past.

  • Can I use HTH™ Algae Guard Advanced in a saltwater pool?

    Yes. HTH™ Algae Guard Advanced is compatible with saltwater, vinyl liner, and all standard pool types. Saltwater pools are not immune to algae, especially when the salt chlorine generator struggles to keep up during heat waves or periods of heavy pool use. Adding algaecide once a week is a smart addition to any saltwater pool maintenance routine.

  • How is HTH™ Algae Guard Advanced different from HTH™ Algae Guard 10 and HTH™ Algae Guard+ Ultra?

    HTH™ Algae Guard 10 is a weekly preventive designed primarily for green algae in clear, balanced pools. HTH™ Algae Guard Advanced provides weekly protection against green, mustard, and black algae. HTH™ Algae Guard+ Ultra provides up to 30 days of protection against all three algae types and is ideal for pools that need stronger, longer-lasting coverage. Choose the product that best matches your pool maintenance needs.

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Quick Pool Tips

  • Always read product label directions prior to using and use only as directed

  • Always add chemicals to pool water, never the other way around

  • Never add chemicals to pool water when people are in the pool

  • Warning symbol with a triangle and exclamation mark on a blue background

    Never mix products together

  • Always store pool products in a cool, dry location and out of direct sunlight