Natural colouring with SGP Shadow pond dyeSGP Shadow natural look pond dye has proved very popular with gardeners that wish to treat their pond water with an eco-friendly algae control product, without a tint of colour.Both the liquid and soluble powder sachets of natural look pond dye will disperse freely in your pond, controlling the amount of sunlight penetrating your pond water to inhibit the resources available to algae and submerged aquatic weeds.Manual algae prevention can be time consuming which is not always practical for weekend gardeners. Our natural look pond dye is easy to apply, creating a natural looking ‘twilight effect’ that regulates your pond’s ecosystem to the benefit of pond life, fish and plants.SGP Shadow is eco-friendlyFree from herbicides, pesticides and algaecides, the natural look pond dye will prevent an excess of nitrogen which (if unchecked) can result in an algal bloom where algae reproduce in record numbers. Algal blooms are known to be harmful to other pond life, both other plants and fish. With SGP Shadow you are left with a wild-life friendly, natural looking pond for you and your family to enjoy.