Leslie's 14021 Half-Gallon Black Algae Killer. . Black Algae Problem Solver! This unique blended formula is the best algaecide to use for stubborn algae such as black and mustard algae in all swimming pools. Black algae is perhaps the hardest algae to get rid of. Follow this step-by-step tutorial to help you get rid of black algae in your pool fast. Black algae generally penetrate porous pool surfaces like concrete and gunite . The chemicals that you will need to buy are shock treatments and an algaecide. Amazon.com : Applied Biochemist 406303A Black Algaetrine Algaecide, 32-Ounce : Swimming Pool Algaecides : Garden & Outdoor. . Pool Mate 1-2190 Black Algaecide for Swimming Pools, 1-Quart . Special offers and product promotions. Amazon.com : Black Algae Killer Preventer [1 Bottle = 1 Quart] : Garden & Outdoor. . Pool Mate 1-2190 Black Algaecide for Swimming Pools, 1-Quart. 3.5 out of 5 stars 25 . Special offers and product promotions. Your cost could be sh.00 . BioGuard Spot Kill kills and remove black algae stains from swimming pools Item 23107. Jump to Treating Black Algae - The protective layer that forms on black algae makes the algae otherwise . After the algaecide has run its course, shock the pool. . To remove larger quantities of deal algae, consider adding an alum . Sep 29, 2010 - Rob Cox. 2010 Pool Drowning Statistics by Rob Cox, September 24, 2010. Treatment of Black Algae in Pools. black algae in pools. When I was . Jul 4, 2009 - I told my husband to put some black algae killer in the pool, and well, . but if you really want the help this forum can offer you that will get your .