CrystalClear PondTint Blue Dye turns your water an alluring shade of blue to help prevent photosynthesis from occuring within the pond. This helps keep algae from forming (by refracting the light - algae needs sunlight to grow), provides added safety for fish against predation, and helps keep water cool on hot summer days. BlueTint provides a protective shield for water to keep unwanted clarity issues from arising in water gardens, ponds, and lakes.
Photosynthesis: The chemical reaction by which carbon dioxide and water combine producing oxygen and the sugars that plants need for growth. This is accomplished by light acting on light-sensitive pigments call "chlorophylls"
Helpful Tip:Shading your pond can also be accomplished by adding floating plants such as water lettuce, water hyacinth, or water lilies.
16 oz. treats 16,000 gallons.