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About This Item Stubborn algae can be caused by low chlorine levels poor water circulation or very warm weather. HTH Algae Guard+ Ultra is the strongest algae control formula from HTH the brand swimming pool owners have trusted for over 90 years. The non foaming non staining formula both kills and prevents extreme amounts of stubborn green black and mustard algae for a season of crystal clear pool water. Simply add directly to your swimming pool water and dive right back in! HTH Algae Guard+ Ultra is compatible with all swimming pool types and works great with HTH Shock products. About HTH Pool Care HTH Pool Care was developed with the pool owner in mind. We know that maintaining your pool water can be a lot of work. That is why we are here every step of the way helping you clear the uncertainty from pool care. With economical easy to use solutions HTH is designed to work hard so you are prepared to tackle whatever life throws in your pool. From balancing your water to treating green water we offer a full line of products to keep your pool water healthy and your swimmers happy. Treat monthly.
- Get long-lasting protection from extreme algae. Our strongest, non-foaming algae control kills blooms and prevents regrowth, guaranteed! Long-lasting algae
- Kills all algae types. Compatible with all swimming pools. Non foaming, non-staining formula. Treat monthly.
- Our strongest algae control Kills, prevents and protects against regrowth of heavy green, black and mustard swimming pool algae.
- Non foaming, non staining Add HTH Algae Guard+ Ultra directly to your swimming pool water and reduce chlorine usage
- 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 Works great with HTH Shock products.
