Microbe-Lift is specially formulated to create a healthy environment for decorative fish ponds, lagoons and smaller water features, by providing a cleaner (or improved) environment. Microbe Lift PL improves dissolved oxygen levels, reduces ammonia nitrogen levels and dissolves away organic sludge. Seeds and maintains biological filters and significantly reduces noxious odors caused by dead algae and other biological debris. Contains photosynthetic bacteria which reduces cloudy water. It is effective over a wide range of pH levels and has continued biological activity even in water temperatures under 55 degrees F.