Best Pool Chlorine for Algae of 2025

HTH Chlorine Tabs are advanced, individually wrapped tablets designed to protect your swimming pool and swimmers with one easy, convenient tablet. This product is a sanitizer, clarifier, and algaecide that sanitizes, clarifies, and kills algae for crystal clear water all season long. The slow-dissolving, long-lasting formula is sun-protected for longer chlorine life and lasts up to one week. HTH Chlorine Tabs are compatible with all pool types, including vinyl-lined pools and saltwater systems, and can be used in a floater, feeder, or skimmer basket. For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm.

HTH Pool Care 1" Chlorine Tabs are a chlorine-based sanitizer that kills bacteria and algae in swimming pools. These slow-dissolving tabs are sun-protected for a longer chlorine life, and are compatible with all pool types. Customers appreciate the convenience of not having to open each individually wrapped tab, and the product's ability to keep chlorine levels correct.

The Clorox Pool&Spa Shock XtraBlue2 is a fast-dissolving chlorine product that kills and prevents algae and bacteria in your pool. Its algae-fighting formula improves filter performance, ensuring a cleaner and safer swimming environment.

In The Swim Shock is a powerful chlorine shock treatment that is perfect for regular pool maintenance. With its 68% Calcium Hypochlorite (Cal-Hypo) main active ingredient, it quickly eliminates algae, bacteria, and other harmful contaminants from your pool water. This shock treatment is designed to provide crystal clear water and defend against various microorganisms. The dosage is 1 pound per 10,000 gallons, making it easy to measure and apply. In addition to swimming pools, spas and hot tubs can also benefit from this shock treatment. To prevent bleaching of the liner, it is important to pre-dissolve or dilute the Cal-Chlor granules. Keep your pool clean and safe with In The Swim Shock.

Clorox XtraBlue Chlorinating Granules is a pool chlorine product that offers dual-action sanitizer and shock to help you keep your pool clean and healthy. It kills bacteria and prevents all types of pool algae, ensuring that your pool water is always crystal clear. The product also improves filter performance, which makes cleaning your pool easier and more efficient. With Clorox XtraBlue Chlorinating Granules, you can enjoy your pool without worrying about harmful bacteria or algae growth.

Clorox Pool&Spa XtraBlue Chlorinating Tablets are the perfect solution for keeping your smaller pool clean and clear. These 1-inch tablets kill bacteria and prevent all types of pool algae, while also preventing corrosion, scale, and stains. With long-lasting sunlight protection, these tablets are easy to use in feeders or floaters for weekly maintenance. They dissolve slowly and last longer, giving you control of the amount of chlorine in your water. Keep your pool beautiful with these multi-functional tablets.

Rely on HTH Spa Chlorinating Sanitizer to control algae, kill bacteria, and destroy contaminants in your spa. This convenient and easy-to-use sanitizer is ideal for sanitizing and shock treating spas and hot tubs. It acts fast and is compatible with chlorine-based spas. By using HTH Spa Chlorinating Sanitizer, you can protect your water against chlorine loss, creating a more comfortable spa experience with no sediment. Incorporate it into your regular HTH Spa care routine for best results.

Introducing the Coral Seas Pool Chlorine, a revolutionary chlorine shock enhancing treatment for your swimming pool. This 2 lb. treatment is designed to effectively remove green, yellow, brown, and pink algae from your pool, leaving it clean and algae-free. Compatible with pools operating a chlorine generator, this treatment is simple to use and requires no brushing. It gently cleans up algae without the use of harsh chemicals, making it safe and non-toxic. The Coral Seas Pool Chlorine can be used on all pool surfaces, including vinyl liners, ensuring a thorough and efficient cleaning process. Say goodbye to algae and hello to a pristine pool with the Coral Seas Pool Chlorine.

HTH Pool Care Shock is a multi-functional pool shock treatment that solves 90% of pool water problems within 24 hours. Its convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), preventing overstabilization or chlorine lock. HTH Pool Care Shock is compatible with all pool types, including vinyl-lined pools and saltwater systems. For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly.

Clorox Pool&Spa XtraBlue 3" Long Lasting Chlorinating Tablets 12 lb is a pool chlorine product that helps protect against algae and bacteria for water that stays clean, clear and free of visible algae. It kills all types of pool algae and bacteria, and is protected against sunlight to last longer. Customers have praised its effectiveness and long-lasting protection, though some have noted that the tablets can disintegrate quickly.