Skip to product information
1 of 3

Dyofix SGP Shadow Pond Dye

Dyofix SGP Shadow Pond Dye


Regular price £16.49 inc.VAT
Regular price Sale price £13.74 ex.VAT
Sale Sold out
£13.74 exc.VAT

3 different liquid concentrations

Works in all garden ponds

Harmless to plants, fish, filters and wildlife

Lead time, 1 - 2 working days

UK delivery available


Natural colouring with SGP Shadow Pond dye

SGP 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-friendly

Free 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.


  • Maintains a natural-looking pond
  • Economical and easy to use
  • Aesthetically pleasing ‘twilight effect’ pond water
  • Time-saving algae control
  • Works in all garden ponds
  • Simple application methods
  • Blocks light, denying algae’s food source.
  • Free of pesticides and herbicides
  • Harmless to plants, fish, filters and wildlife
  • All year-round use


Calculate the volume of water in your pond using the calculator below.

SGP Shadow Liquid

Half-fill a watering can with pond water and add the measured amount, stirring the contents. When mixed, apply to different parts of the pond.

SGP Shadow 15: 1ml is required for every 50 litres of water

SGP Shadow 50: 1ml is required for every 150 litres of water

SGP Shadow 100: 1ml is required for every 300 litres of water

Please note: The water will look to have more colour in the first few days because it takes a little longer to mix from the top to the bottom.

Top Ups

To maintain the level of DyoFix in the water, as a general guide, add 10% of the original dose monthly.

The first application should be made in early Spring.

Reference Samples

If reference samples are desired, it is suggested that these should be taken at least a week after the initial application. Samples should be in clear containers with a secure lid, labelled with the date and location and stored in a dark place. An initial comparison to tap water will show the amount of colour present in the water.

Product Specification

View full details

Collapsible content


300ml bottle in a variety of concentrations 

SGP Shadow 15 - Up to 15,000L of water

SGP Shadow 50 - Up to 50,000L of water

SGP Shadow 100 - Up to 100,000L of water