HTH™ Pool Care Algae Guard+ Ultra
Extra Strength Pool Algaecide
HTH™ Pool Care Algae Guard+ Ultra
Extra Strength Pool Algaecide
HTH™ Pool Care Algae Guard+ Ultra is our most powerful pool algaecide, engineered to eliminate and prevent even the toughest algae.
- This non-foaming, non-staining algaecide for pools works fast to kill stubborn green, black, and mustard algae while preventing regrowth for long-lasting clarity and confidence.
- Add it directly to your pool water! No waiting, no complications, and enjoy a clean, clear, swim-ready pool in minutes.
- Safe for all pool types, including vinyl-lined and saltwater systems, this professional-grade swimming pool algae cleaner gives you certainty all season long.
Product Benefits
How to Use
How to Use
Why You Should Use This Product: Algae Guard+ Ultra is an algaecide and bactericide designed for pools, spas, and hot tubs. It controls algae growth, suppresses odor‑causing bacteria, and helps reduce overall chlorine use when applied as directed.
Before Use: This product contains copper. Test pool or spa water and maintain proper balance before application. Keep the pump running while adding this product. Do not apply in a way that allows contact with people or pets.
For Pools
Algae Control: For visible algae or active algae growth, apply 2 fl oz of this product per 1,000 gallons of pool water.
Algae Prevention: Before visible algae appears, apply 1 fl oz of this product per 1,000 gallons of pool water. Repeat once per month to maintain control.
Application may be made throughout the year, but best results are achieved when applied in late spring or early summer as algae first appears.
For Spas and Hot Tubs
Apply 6 mL of this product per 100 gallons of water using the supplied measuring cup. This will produce approximately 0.9 ppm metallic copper.
Test copper levels every 14 days using a standard copper test kit. Add additional product as needed to maintain copper levels up to 0.9 ppm. Do not exceed 1.0 ppm metallic copper.
Visible Algae & Water Conditions
Dosage requirements may vary depending on algae species, water hardness, water temperature, and the amount of algae present.
Higher dosages may be required in colder water, higher algae concentrations, or harder water conditions.
How to Use
Why You Should Use This Product: Algae Guard+ Ultra is an algaecide and bactericide designed for pools, spas, and hot tubs. It controls algae growth, suppresses odor‑causing bacteria, and helps reduce overall chlorine use when applied as directed.
Before Use: This product contains copper. Test pool or spa water and maintain proper balance before application. Keep the pump running while adding this product. Do not apply in a way that allows contact with people or pets.
For Pools
Algae Control: For visible algae or active algae growth, apply 2 fl oz of this product per 1,000 gallons of pool water.
Algae Prevention: Before visible algae appears, apply 1 fl oz of this product per 1,000 gallons of pool water. Repeat once per month to maintain control.
Application may be made throughout the year, but best results are achieved when applied in late spring or early summer as algae first appears.
For Spas and Hot Tubs
Apply 6 mL of this product per 100 gallons of water using the supplied measuring cup. This will produce approximately 0.9 ppm metallic copper.
Test copper levels every 14 days using a standard copper test kit. Add additional product as needed to maintain copper levels up to 0.9 ppm. Do not exceed 1.0 ppm metallic copper.
Visible Algae & Water Conditions
Dosage requirements may vary depending on algae species, water hardness, water temperature, and the amount of algae present.
Higher dosages may be required in colder water, higher algae concentrations, or harder water conditions.
Ingredients
Ingredients
Active Ingredient:
Copper Sulfate Pentahydrate (CAS No. 7758-99-8): 19.8%
Other Ingredients: 80.2%
Total: 100.0%
Equivalent to 5% metallic copper.
Ingredients
Active Ingredient:
Copper Sulfate Pentahydrate (CAS No. 7758-99-8): 19.8%
Other Ingredients: 80.2%
Total: 100.0%
Equivalent to 5% metallic copper.
Safety, Storage, and Disposal
Safety, Storage & Label Guidance
Use this product only as directed. Avoid contact with eyes and skin.
Wear protective eyewear and chemical‑resistant gloves when handling.
Wash hands thoroughly after handling and remove contaminated clothing.
Store in the original, tightly closed container in a cool, dry location. Do not freeze.
For complete safety precautions, first aid instructions, environmental warnings (including aquatic toxicity), and disposal details, always refer to the product label.
Safety, Storage & Label Guidance
Use this product only as directed. Avoid contact with eyes and skin.
Wear protective eyewear and chemical‑resistant gloves when handling.
Wash hands thoroughly after handling and remove contaminated clothing.
Store in the original, tightly closed container in a cool, dry location. Do not freeze.
For complete safety precautions, first aid instructions, environmental warnings (including aquatic toxicity), and disposal details, always refer to the product label.
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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
Never mix products together
Always store pool products in a cool, dry location and out of direct sunlight
