Hydra Blue Water Dye (Powder)  Long Lasting Water Dye - Vibrant Blue Use in Ponds, Fountains & Lakes Highly Concentrated x3 Times Stronger Than Liquid Dyes

• Highly Concentrated Powder - three times stronger than liquid dyes.
• Gives a rich blue finish to water - Lasts for months.
• Within minutes of applying the product, the pond water is coloured blue.
• Blocks the sun's rays (UV light) to effectively starve the growth of existing algae and formation of new.
• Enhances the reflective properties of ponds and water features.
• Creates a stunning background for water plants.
• Completely free of pesticides and herbicides.
• Hides aquatic life from predators.
• Food based dye, harmless to filters and plants.
• The dosage recommended is very low and has no effect on fish, any visiting wildlife or domestic animals.
• Each pack of dye contains a pair of protective gloves.
• Full usage instructions on label.
• Normal dilution is between 1:1,000,000 to 1:10,000,000 - dilution will depend on colour of original water and depth of colour required.

• 250g treats 250,000 - 2,500,000 litres of water.
• 500g treats 500,000 - 5,000,000 litres of water. 
• 1000g (1 kilo) treats 1,000,000 - 10,000,000 litres of water.