Microbe-Lift bacteria is specially formulated to work in watergarden ponds. It is a 100-Percent natural, safe and beneficial bacteria and will not harm fish or plants. 3-5 year shelf life. Reduces ammonia and nitrogen levels. Reduces noxious odors caused by algae, fish waste, rotting leaves and other debris. Reduces larvae of water breeding insects like flies and mosquitoes. Creates a healthy pond environmen t, p romoting faster fish growth. Helps break down existing algae and reduces new algae blooms. Improves dissolved oxygen levels. Dissolves away organic sludge and slime. Simply pour Microbe-Lift/PL Bacteria into pond using the basic application rates chart on the bottle as a guide. First application will require a larger amount followed by four weekly treatments using a lesser amount, then once per month thereafter as a maintenance program.