Clear Pond Fall and Winter Formula A blend of probiotic bacteria and specially formulated enzymes that ensures the rapid buildup of the optimum strains of microbes for a healthy pond all winter. Breaks down sludge, leaves and other fibrous matter. Improves oxygen content during the winter. Effective in water below 55??. Product Features: Breaks down sludge, leaves, and other fibrous matter Helps improve oxygen count Can be effective in water below 55?? Item Specifications: Size: 32 oz. 1 Gallon CLP12 G15202 71344012042