Ecological Labs MLBBG4 1-Gallon Microbe-Lift Bio-Blue

Specially Formulated to Safely Color Lakes, Lagoons, Decorative Ponds, Fountain & Water Features a Beautiful Shade of Blue! A product that safely colors water while its enzymes assist the beneficial bacteria in your pond to create a healthy pond environment Will not stain birds, fish, pond rocks or most concrete fountains once diluted Safe for humans, plants and aquatic life Mixes completely in hours