Skill-It 32oz. Fast Acting Swimming Pool Algaecide made by Bio-Dex SK132 Fast acting super effective algaecide that removes even the toughest Black algae. Eliminates all colors and types quickly. No pH Adjustment required. Contains no heavy metals. An Arizona #1 Best Seller EPA Registered Algaecide 100 % Guaranteed to Work when used as directed. Hard working at eliminating even the most resistant types of algae including black, yellow & green. Must follow with chlorine for complete sanitation of dead algae. Concentrated for superior results: 5 oz per 10,000 gallons or 15 oz per 20,000 gallons for breakout treatment Skill-It Swimming Pool Algaecide helps keep bees and wasps away Non-Metallic & Non-Staining Skill-It Swimming Pool Algaecide is user friendly Eliminates all colors and types quickly. No PH Adjustment required. Skill-It Swimming Pool Algaecide contains no heavy metals. Use only 5 oz of Skill-It per 10,000 gallons needed for breakout treatment. Order Pack of 2 or Pack of 4 and save on shipping!!!

McGrayel Algatec Algee Remover 10064 Algatec provides superior cleanup especially in chlorine and salt swimming pools due to its strong killing action with all types of chlorine products. The product is both an algaecide and algastat (prevents re-growth). Algatec also eradicates Black Algae (fungi) with chlorine in just 7 to 10 days. Unlike phosphate remover products that seek to control algae by phosphate starving, Algatec kills algae and prevents its re-growth. This amazing product makes it easy to control algae blooms and leaves swimming pool water sparkling clear.

Hasa Algi Ban 64020 Granular Tri-chlor TO CONTROL BLACK ALGAE IN SWIMMING POOLS DIRECTIONS FOR USE: Where algae appears on bottom of swimming pool:Adjust the pH of the swimming pool water to 7.2-7.6. Turn off filter and wait until water is calm enough to see spot on bottom. For best results brush black algae spots with a stiff bristle or wire brush prior to treatment. Pour approximately 1 oz. (1/8 cup) HASA ALGI-BAN directly over the spot and allow to settle to the bottom. Use enough HASA ALGI-BAN to completely cover the algae spot. Allow HASA ALGI-BAN to dissolve for a period of 45-60 minutes then brush black algae away. It may be necessary to repeat treatment or to allow more contact time.Where algae is located on swimming pool walls:Place 1 oz. (1/8 cup) HASA ALGI-BAN in a cotton cloth. Tie with string and suspend the bag into the water so that it touches the black algae spot. Allow the HASA ALGI-BAN bag to remain in place for 45-60 minutes, then remove and brush algae away. In extreme cases it may be necessary to repeat treatment or allow longer contact time. For spot treatment on walls and bottom use the
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Skill-It 32oz. Fast Acting Swimming Pool Algaecide Pack of 2 made by Bio-Dex SK132-2 Fast acting super effective algaecide that removes even the toughest Black algae. Eliminates all colors and types quickly. No pH Adjustment required. Contains no heavy metals. An Arizona #1 Best Seller EPA Registered Algaecide 100 % Guaranteed to Work when used as directed. Hard working at eliminating even the most resistant types of algae including black, yellow & green. Must follow with chlorine for complete sanitation of dead algae. Concentrated for superior results: 5 oz per 10,000 gallons or 15 oz per 20,000 gallons for breakout treatment Skill-It Swimming Pool Algaecide helps keep bees and wasps away Non-Metallic & Non-Staining Skill-It Swimming Pool Algaecide is user friendly Eliminates all colors and types quickly. No PH Adjustment required. Skill-It Swimming Pool Algaecide contains no heavy metals. Use only 5 oz of Skill-It per 10,000 gallons needed for breakout treatment. Order Pack of 4 and save on shipping!!!

United Chemical yellow Treat Yellow and Mustard YT-C12 Destroys yellowith mustard algae Hottest formula in California & Florida, the 2 toughest areas in the world Guaranteed to kill yellowith mustard algae Safe for you & your pets Yellow algae grows on the shady side of the swimming pool, in corners, behind ladders and above the light. It can look like dirt on the side. In a covered swimming pool, it can grow all over. Most of it will brush off. If none will brush off, look out, you probably have metal staining. Use United’s Pool Stain Treat for metals Your yellow algae will be immediately arrested and after you brush off any residue, your swimming pool will have superior water clarity.A 2 lb. bottle will treat 60,000 gallons, 4 times what most of the competitors can handle, and we do it better! It is so effective that 9 out of 10 swimming pool professionals use it in So. California & Florida. We guarantee it! It effectively kills yellowith mustard algae and starts to clean up the water of other invisible life forms. It does not contain any heavy metals which can stain your swimming pool. You can use it in
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Hasa Algi Ban 40lbs 64040 Granular Tri-chlor TO CONTROL BLACK ALGAE IN SWIMMING POOLS DIRECTIONS FOR USE: Where algae appears on bottom of swimming pool:Adjust the pH of the swimming pool water to 7.2-7.6. Turn off filter and wait until water is calm enough to see spot on bottom. For best results brush black algae spots with a stiff bristle or wire brush prior to treatment. Pour approximately 1 oz. (1/8 cup) HASA ALGI-BAN directly over the spot and allow to settle to the bottom. Use enough HASA ALGI-BAN to completely cover the algae spot. Allow HASA ALGI-BAN to dissolve for a period of 45-60 minutes then brush black algae away. It may be necessary to repeat treatment or to allow more contact time.Where algae is located on swimming pool walls:Place 1 oz. (1/8 cup) HASA ALGI-BAN in a cotton cloth. Tie with string and suspend the bag into the water so that it touches the black algae spot. Allow the HASA ALGI-BAN bag to remain in place for 45-60 minutes, then remove and brush algae away. In extreme cases it may be necessary to repeat treatment or allow longer contact time. For spot treatment on walls and bottom use
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Applied Biochemists Black Algaetrine 32oz AB6303 A unique, patented combination of algaecides specially formulated to control black algae and other resistant strains. Features: Attacks deeply rooted black algae Safe for vinyl, plaster, colored and fiberglass swimming pools Applications:Dilute in a bucket with at least nine parts of water before applying. To remove black deposits: Brush areas vigorously with a stiff or special algae brush immediately prior to application. This will help break up the black algae colonies that have formed. Apply Black Algaetrine (12 oz. per 10,000 gallons). Brush again once each day for two days following application. Remove any settled algae by vacuuming. Reapply treatment if necessary. Tips:Algaecides are most effective when applied in the morning on warm, sunny days. Because black algae is protected by a tough, waxy coat, it is important to use an algaecide specifically for black algae such as Black Algaetrine Advantage:Contains 3.07% active copper in a specially buffered system that will not upset water balance

Skill-It 32oz. Fast Acting Swimming Pool Algaecide Pack of 4 made by Bio-Dex SK132-4 Fast acting super effective algaecide that removes even the toughest Black algae. Eliminates all colors and types quickly. No pH Adjustment required. Contains no heavy metals. An Arizona #1 Best Seller EPA Registered Algaecide 100 % Guaranteed to Work when used as directed. Hard working at eliminating even the most resistant types of algae including black, yellow & green. Must follow with chlorine for complete sanitation of dead algae. Concentrated for superior results: 5 oz per 10,000 gallons or 15 oz per 20,000 gallons for breakout treatment Skill-It Swimming Pool Algaecide helps keep bees and wasps away Non-Metallic & Non-Staining Skill-It Swimming Pool Algaecide is user friendly Eliminates all colors and types quickly. No PH Adjustment required. Skill-It Swimming Pool Algaecide contains no heavy metals. Use only 5 oz of Skill-It per 10,000 gallons needed for breakout treatment.

United Chemical Black Treat BT-C12 Kills black algae Easy to use Safe for you and your pets Contains no metals Black Treat is an E.P.A. registered algicide formulated for the killing and elimination of black algae in chlorine/bromine swimming pools. Black algae grows on the walls and floor as a black spot that you can scrape off with your fingernail. It is a colony algae that is very hard to kill. You must run a continuous preventative program after you have removed the visible colonies. If none will brush off, look out, you probably have cobalt staining. Use Uniteds Cobalt Cure for cobalt. Cobalt happens only on fiberglass or epoxy. Your black algae will be immediately arrested and after you brush off any residue, your swimming pool will have superior water clarity. Run your filter to clear it up. A 3 lb. bottle will treat 20,000 gallons, and is 2 times as effective as most of the competitors, and we do it better! It is so effective that many swimming pool professionals use it all over the U.S. We guarantee it! Always check your filter with Filter Aid first so you do not waste money. It effectively kills black algae
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United Chemical No Mor Problems 1gln NMP-4GAL