In The Swim Black Algaecide – Eradicates Black Algae in Swimming Pools – Copper Sulfate Pentahydrate – 1 Quart

About this item In The Swim’s Black Algaecide is a specially formulated solution that eradicates black algae from your swimming pool. Our solution contains 11.8% copper sulfate pentahydrate, which breaks down black algae’s tough denfenses that other solutions cannot. For the best results, it is recommended to thoroughly brush the surfaces of your pool, clean your filtration system, and super chlorinate your water prior to adding Black Algaecide. This solution has the ability to be a treatment or maintence algaecide in your swimming pool. NOTE: We are currently unable to ship Black Algaecide to DC, ID, MT, ND, RI, SD, UT, VT, AK or HI due to State Restrictions