Microbe Lift PL Gallon + Microbe Lift Algaway Gallon Pond Water Treatment Duo Microbe Lift PL Gallon and Algaway Gallon Pond Water Treatment Duo Pack Microbe Lift PL Creates a cleaner environment for your pond, Improves fish health, growth and longevityDissolves away organic sludge Microbe Lift Algaway Eliminates many types of algae in the pond Both Will not harm fish or live ornamental plants, but make sure water is well aerated via waterfall, fountain or other method. PL Gallon Treats: 5,000 Gal Pond up to 21 months- Algaway Gallon Treats: 45,424 Gallons