Microbe Lift 1-Quart Pond Microbe-Lift PL 10PLQ Manufactured by Ecological Labs Made in the United States Designed and made with the highest standards in aquatic performance in mind Reduces ammonia nitrogen levels Dissolves away organic sludge Seeds and maintains biological filters Significantly reduces noxious odors caused by dead algae, fish fecal matter and urine Reduces hydrogen sulfide, which creates strong, offensive odors