GreenClean Blue Colorant Concentrate - 16 oz - For Koi Ponds and Water Features. Safe for Fish, Plants, Pets and Wildlife.

GreenClean Blue Colorant defends against the sun to protect water quality and clarity. When it is added to water, the first benefit is the aesthetically satisfying blue tone that develops. This blue tone serves another purpose aside from being attractive, it works to block the sun€s UV rays that promote excess aquatic algae growth and organic buildup. This added feature of protection is especially important for water features that receive part or full sun during warmer months. GreenClean Blue Colorant can be used in any season to add healthy blue coloring to water features but is especially important during summer months. Re-treat features every 30-90 days depending on rainfall, runoff, turbidity and evaporation.