This blue and black pond dye will improve your water quality and clarity, while maintaining its color. Sapphire Blue uses a proprietary formula to enhance your pond or lake with a beautiful, natural dark blue color

• Clears up muddy ponds
• 100% safe for humans, fish livestock, pets, birds, swimming, potable water and irrigation
• Maintain color and clarity up to 30 days
• Helps settle dissolved solids
• 1 gallon treats 1 surface acre, 4 – 6 feet deep.