Crystal Blue uses a proprietary formula to enhance your pond or lake with beautiful royal blue color. Pond dyes will improve your water quality and clarity, while maintaining its color. Pond dyes are also the safest product to use in any preventive pond p

Used to darken water to slow the growth of unwanted algae and weeds

100% safe for humans, fish, livestock, pets, birds, swimming, potable water and irrigation

Provides an aesthetically pleasing blue color to any pond

Use lighter dosing if you use your pond for a water source

1 gallon treats 1 surface acre, 4 - 6 feet deep

Maintain color and clarity for up to 30 days