POND WEED INHIBITOR - Reduces Algae and Submerged Weeds

Pack Size / OptionsPrice 
LAKESHADOWx1  £25.20 Inc VAT
LAKESHADOWx3  £68.40 Inc VAT
LAKESHADOWx5  £108.00 Inc VAT

Product Description


Reduces Algae and Submerged Weeds 

Lake Shadow is a revolutionary way of controlling and reducing submerged weeds in ponds and lakes.

It does this by creating an artificial 'shadow' within the water which halves the light from reaching the bottom. This in turn will inhibit or halt any growth of algae. Lake Shadow contains a special blend of the three primary colours, red, yellow and blue so that anyone looking at the water would not know that any colour had been used at all.

 This product is completely safe to humans and wildlife and is non-toxic European Food approved items as well as being manufactured from organic sources.

Just 1 x 100gm water soluble sachet will treat 400,000 litres water.

 The individual sachets ensure even distribution in larger lakes and also offer the potential of treating smaller ponds.

As Lake Shadow is in 100gm water soluble sachets,  it makes it easy to calculate the number required to treat a lake or pond.
In large lakes, if a boat is being used, simply drop sachets in different areas where they will dissolve By spreading the area, the time taken for the Lake Shadow to fully mix with the water is reduced.

Using sachets where a boat is not available. Facing the water with a breeze coming from behind, drop a few sachets along the edge and throw the others into the water. The breeze will move the water and the Lake Shadow sachets will dissolve and mix in . Lake Shadow will fully mix with all of the water using this method but may take a little longer.


Working Out What You Need:
Width (m) x Length (m) = sq meterage.  sq meterage x depth = amount in cubic meters.
1 cubic meter = 1,000L of water 


Can be purchased as a single sachet  LAKESHADOWx1 or in multiples of 3 and 5








  • Works in all large ponds, lakes and fisheries
  • Very economical and simple to use
  • Lasts up to three months
  • Free of chemicals that may be harmless to plants, fish, the wildlife and environment
  • All year round use

Looking to Buy in Bulk?

For all Bulk order requirements please email info@chemigro.co.uk and an adviser will respond between 24 - 48 hours. A 10 to 15% discount is available on bulk orders depending on the product (on some products more). Please enquire for further details