HTH® Pool Care Algae Guard Ultra

Skip to product information

Get long-lasting protection from extreme algae. Our strongest, non-foaming algae control kills blooms and prevents regrowth for up to 3 months.

  • Long-lasting algae eliminator
  • Kills and prevents all algae types
  • Swim immediately
  • Compatible with all swimming pools

Our strongest algae control

Kills, prevents and protects against regrowth of heavy green, black and mustard swimming pool algae for up to 3 months.

Non-foaming, fast-acting

Add HTH® Algae Guard Ultra directly to your swimming pool water and swim right away!

Compatible with all pools

This non-staining formula 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 Ultra every 3 months. Works great with HTH® Shock products.

How to use

HTH® Algae Guard Ultra

1. Measure Correct Amount

Add 16 fl oz for 10,000 gal of swimming pool water for up to 3 months of protection.

Add 16 fl oz for 10,000 gal of swimming pool water for up to 3 months of protection.

2. Add Directly to Pool Water

Make sure the pump is running.

Make sure the pump is running.

3. Use Every 3 Months

For best results, add HTH® Algae Guard Ultra every 3 months.

For best results, add HTH® Algae Guard Ultra every 3 months.