Crystal Blue uses a proprietary formula to turn your pond or lake a beautiful royal blue color all year long. Simply pour Crystal Blue colorant into your pond from the shoreline and it will even clear up muddy ponds. Crystal Blue is 100% safe for humans, fish, livestock, pets, birds, swimming, potable water and irrigation. Crystal Blue maintains color and clarity all year long. Crystal Blue helps settle out dissolved solids. Clean, clear, and Crystal Blue!

Use before algae appears. If your tank is shallow and sunlight is a problem all year long, start your treatment plan with Crystal Blue. This will help keep algae from growing. Colors and enhances the appearance of your pond or lake. Can be used year-round.

1 Gallon Treats 1 Surface Acre of 4 - 6 feet deep