Microbe-Lift/Bio-Blue™ saves time and money! Does 2 jobs with a single application. Safely colors water and blocks out algae causing UV rays. Safe - Non Toxic - Non-Pathogenic. Easy to use, Biodegradable. Once diluted, will not stain birds or fish, nor most concrete fountains or pond rocks. Safe for humans, plants and aquatic life. Safely colors water a beautiful shade of blue. Blocks out specific light rays. Digests organic waste. Reduces noxious odors. No restrictions on swimming, irrigating or fishing. Makes off-color water more appealing. Mixes completely in hours. Dye breaks down in 6-8 weeks. 8 oz treats 4000 gallons, 16 oz treat 8000 gallons, Gallon treats up to 1 acre 4'-6' deep.