Check the listing for details. Baquacil Algicide 1 qt - 2 Pack. Condition: New. Listed at 54.99 USD. Baquacil Pool Algaecide is an effective solution for pool owners who want to maintain a crystal-clear water surface. This powerful algaecide is specially formulated to prevent and treat stubborn algae growth in pools using the Baquacil System. With a supplemental quaternary ammonium formula, it provides long-lasting protection against a wide range of algae and slime, making it a great choice for pool owners who want to keep their pools looking and feeling clean. Best of all, it requires only a simple weekly application, making it a hassle-free way to keep your pool water clear all season long. Product Features: May be used on a weekly basis for prevention and treatment of algae Supplemental algaecide may be used in conjunction with Baquacil Select Algaecide