Dyofix Lake Dye

       At last a cost effective and environmentally friendly way to control aquatic weed and algae. Many still waters these days suffer from weed or algae problems, excess nutrients are utilised by plants and algae, these can cause major problems if allowed to get out of control. Many of the chemicals that have been used over the years have now been banned as they cause major problems within the aquatic environment.

       We have used this dye based system for over ten years now, this dye reflects some of the light spectrum that plants need to photosynthesise thus starving the weeds and algae, the dye is food grade and is totally none toxic, it is best added in early spring to stop the weed or algae developing in the first place, there are two versions of the dye available one turns the water a very attractive blue colour, the other is called shadow and just darkens the water like it was constantly in a shadow.                                                


       The blue lake dye is the most cost effective to use, just 400 grams will treat 1 acre 1 metre deep, at 2 metres deep 800 grams would be needed, 1 kg will treat 1 acre 2.5 metres deep, or 2.5 acres 1 meter deep.  


       The shadow lake dye is not as concentrated as the blue but is preferred by some fishery owners as it looks more natural, 1 kg of the shadow will treat 1 acre 1 metre deep. 


       The above dose rates are the minimum doses, there is no maximum dose as they are completely non toxic, the more dye added to the lake the stronger the colour will be.


       Both will need top up doses every few weeks or so as the dye slowly bio-degrades and to counteract dilution by rainfall or other through flows of water. 





Lake blue


5kg £198.00  

10kg £336.00  





5kg £156.00 

10kg £252.00


prices include vat and delivery 




Hold cursor over a picture to view a larger image

      Above you can see some pictures of the dye in use, the stronger the dose the more coloured the water will become, even if you were to overdose by 10 times there is still no harmful affects on aquatic life such as fish and invertebrates, it only blocks out some of the light spectrum starving vegetation, marginal and surface plants are not affected. If treating weed ideally the dye needs to be added in early spring before the weed gets going, at the minimum dose the dye will have cut out enough of the light spectrum at a depth of 60cm to prevent weed growth, if you double the dose the dye will have blocked out the light at a depth of about 30cm.

         With algae it works in a slightly different way, at the minimum dose rate the dye has blocked out enough of the light spectrum below 60cm so the algae cannot survive in the lower layers, this reduces the total volume of water the algae can survive in, thus reducing the overall amount of algae present in the water body.

      Algae floats about in the water column and can migrate to the surface so with algae it is best to keep the lake at a higher dose rate, from personal experience (depending how severe the algae problems are) i would recommend double the minimum dose rate, this then has to be kept topped up. Even at double the standard dose rate there will still be some algae in the system, low amounts of algae are beneficial as it provides food for rotifers and zooplankton that are then consumed by the fish, but when algae gets out of control it can cause huge problems from massive dissolved oxygen and ph swings to total de-oxygenation if it suddenly dies back.     

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