HTH
HTH Algae Guard Ultra
Best long-term algae solution for busy pool owners.
This HTH Algae Guard Ultra is a powerful swimming pool chemical designed for robust algae control. Its long-lasting formula actively kills, prevents, and protects against the regrowth of heavy green, black, and mustard algae for up to three months. The liquid solution is non-foaming and fast-acting, allowing you to swim shortly after application. It is specifically formulated to be non-staining and is compatible with all pool types, including vinyl-lined and saltwater systems. For optimal pool clarity and protection, apply this treatment every three months, and it pairs effectively with HTH Shock products.
$70.00
Owner Satisfaction
4.6
/ 5
Category Rank
95
/ 1309
#95 in Pool Cleaners & Chemicals
Price vs Category Average
+3%
Above average
Volume
32
/ fl oz
Who it's for
- Pool owners battling stubborn or multiple algae varieties
- Swimmers wanting immediate water clarity after chemical treatments
- Busy homeowners seeking a low-maintenance, preventative pool care routine
Who should skip it
- Budget-conscious shoppers looking for entry-level chemical solutions
- Pool owners with high calcium hardness levels in their water
- Users preferring simple, low-risk application methods
Performance breakdown
Algae Eradication
Aggressively targets and eliminates stubborn green, black, and mustard algae strains.
Preventative Longevity
Provides a reliable three-month shield against recurring pool contamination.
Application Convenience
Non-foaming formula allows for immediate pool use after treatment.
Surface Compatibility
Safe for all pool types including sensitive vinyl and saltwater systems.
System Integration
Works seamlessly alongside standard shock treatments for maximum water clarity.
Stain Resistance
Engineered to protect pool surfaces without leaving behind unsightly chemical residue.
Key Specs
Volume
32 fl oz
Product Type
Algaecide
Formula
Long Lasting
Compatibility
All swimming pools including vinyl-lined and saltwater systems
Action
Kills, prevents, and protects against regrowth
Application
Non-foaming and fast-acting
Features
- Effective against heavy green, black, and mustard algae strains
- Allows swimming immediately after application
- Designed to work well in conjunction with HTH Shock products
What customers say
Consumers consistently highlight the exceptional quality and reliability of HTH Algae Guard Ultra. This product earns high marks for its ability to quickly resolve stubborn algae issues, often succeeding where standard treatments fall short. Users appreciate the straightforward application, confirming that pool maintenance becomes noticeably easier. The concentrated formula delivers clear, sparkling water, establishing strong value and making it a trusted solution for maintaining clarity throughout the swimming season.
Know before you buy
Yes, this formula is specifically designed to target and eliminate heavy green, black, and mustard algae strains.
You can swim immediately after application. The formula is fast-acting and does not require a waiting period.
Yes, HTH Algae Guard Ultra is compatible with all pool types, including saltwater systems and vinyl-lined pools.
For consistent protection and to prevent regrowth, you should apply this treatment every three months.
Absolutely. This product is formulated to work effectively in conjunction with HTH Shock products to maintain optimal pool clarity.
No, the formula is specifically designed to be non-staining, making it safe for use across various pool finishes.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$70