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Your cart is empty.The BAQUACIL AlgiDefense Algistat stops mustard algae before it starts. Conveniently packaged in eight premeasured 2-oz pouches. Algidefense is an Algistat that will keep mustard algae away all season. The continual use of the BAQUACIL 3-step Program is important to keep your pool clear and clean the entire season. About the Brand: BAQUACIL was developed for use in chlorine-free swimming pools. Our water care products are economical and powerful enough for the toughest jobs. BAQUACIL and its sister brands offer everything from algaecides and deposit control formulas to sanitizers, powerful surface cleaners, clarifiers, enzyme-based cleaners, and more. If you like BAQUACIL, check out some of the other similar brands from our parent company, Sigura, like HTH, Applied Biochemists, Leisure Time, GLB, Spa Selections, and PooLife. Sigura has a long heritage of developing innovative water treatment solutions for use in pools, lakes, ponds, hot tubs, and more. At Sigura, we have an unparalleled commitment to delivering superior water treatments that improve the environment and enhance the security, health, and safety of our global communities. With our innovation and simple, intuitive solutions that anticipate needs, Sigura customers feel more secure as they enjoy their pools, spas, ponds, and lakes.