Microbe-Lift Autumn Prep Pond Bacteria - Quart - specially formulated for late fall and winter. Helps accelerate decomposition during the fall and winter months. Will also jump start your pond to a healthier environment in the spring. Quart package contain one quart of liquid bacteria and two 2 oz. water soluble packets with a blend of cellulase enzymes, cellulase producing bacteria and a cold weather bacteria. An all-natural way to clean your pond safely and effectively during cold water temperatures.