Whenever the appearance of your pond water is not acceptable due either to cloudiness or unattractive colour, use Bio-Blue. The tint will also help filter out the sun\'s UV rays. Enzymes quickly break down suspended organic matter that can make water cloudy, and the biodegradeable dye tints the colour of the water for a dramatic appearance. It accomplishes two tasks with one application. Bio-Blue can be used to temporarily enhance the pond aesthetics since the biodegradeable dye will break down in 6-8 weeks. It can also be used regularily to maintain clarity and the desired level of colour.