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Blanket Weed and Pond Sludge Removal

All you need to know about blanketweed and pond sludge how to treat and remove it
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Pond Sludge Remover


"Thankyou for sending out our pond treatment so quickly and I am pleased to advise that has already been incredibly effective...."


"Last year we had a huge blanket weed problem which nothing would make any difference. I found Green Lightning online and ordered some. It seemed expensive but we were desperate. At first the water went cloudy and we thought it was another failure, but we persevered. After the third treatment the water turned crystal clear. The blanket weed turned spongy and just fell away. We are still using the original pack and the water has remained crystal clear. I am so glad I found Green Lightning! I highly recommend this to anyone with a pond!"

Elizabeth E Lumley

Dear Gavin
"I cant thank you enough for your product GREEN LIGHTNING which I have used to clear my pond of the wretched Blanket Weed. It has plagued me over the years and caused all sorts of problems with the pond equipment. It has been a year now since I purchased your GREEN LIGHTNING and the pond has been clear and the 'devils weed' has completley gone. I am a really happy customer and thank you once again for your great product and wish you every success in your business."

Mr C.Bedford


Blanketweed - An explanation.




Blanket weed (Spirogyra adnate) is one of the most prolific aquatic weeds known to amateur and professional pond-keepers in the U.K. In The USA it is called Long String Algae. This description is pretty accurate because in effect Spirogyra is not a plant but a filamentous algae. There are several other aquatic weeds which are also filamentous algae and the most prevalent of these are Cladophera, Rhizoclonium, Vaucheria and Ulothrix (Ulothrix is a Chlorphyte like Spirogyra and looks very similar)

The cellular structure of a cellBlanket Weed is a long thin filamentous alga, which like Ulothrix thrives in ornamental ponds. As can be seen from the microscopic observation, the cells of Spirogyra are characterised by helical shaped chloroplasts which give the weed the pronounced green commonly associated with Blanket Weed. Its growth is increased by bright sunlight and shallow fast running water so that it will be found in water-falls and unshaded pond areas. In ornamental ponds which tend be stocked with fish, the tendency to overfeed causes additional fish excrement which contains nutrients favoured by Blanket Weed particularly nitrates and dissolved ammonia. This means that apart from normal growth by photosynthesis the weed will grow even faster.

Spores releasing
The spores of Spirogyra can be preserved in the dry state for many years and come back to life when put into water. Ponds can be free of Blanket Weed for years and suddenly become infested. Pulling weed out actually releases spores produced by conjugation (see photo - bottom left), which then produce even more weed.

The proliferation of Blanket Weed is due to the fact that it grows very quickly in sunlight and if left unchecked can cause serious oxygen depletion in ponds. Additionally it can also cause stress to larger fish that find it an obstruction.

Find out more about removing Blanketweed

Green Lightning is now recognised as one of the best-selling treatments for Blanket Weed in the U.K. and is used by amateurs and professionals alike.

It is a totally safe natural product that cannot harm flora or fauna and is specifically designed to remove Blanket Weed and clarify ponds and lakes.

Green Lightning is supplied in a convenient 450 gm water soluble bag so all you have to do is to throw the bag into the water being treated whereupon it will dissolve and release its contents.

Pond Sludge - An explanation

Sludge occurs in slow moving and static water at the bottom of ponds and lakes. It basically consists or organic waste from fish excreta and dead flora and fauna that drop to the bottom and becomes a thick brown sediment. The nutrients in it can promote the growth of unwelcome and harmful bacteria which in turn can reduce water quality affecting both plants and animals. It can also make the water look cloudy and unpleasant. At worst it can produce noxious gases such as H2S (Hydrogen Sulphide) which give the smell of rotten eggs. All in all it is a bad thing to have and a good thing to get rid of.

RED LIGHTNING has been developed scientifically to release bacteria which colonise the layers of sludge and degrade it thus removing the organic matter and clearing the water.

The bacteria in RED LIGHTNING have a broad range of metabolic activities producing a specific range of enzymes which break down fish excrement and uneaten food, dead plant matter and other materials which cause sludge leaving the water crystal clear.

The enzymes produced by RED LIGHTNING bacteria include Amylase which degrades starch, Cellulase which degrades plant and vegetable matter, Lipase which reduces fats oils and grease and Protease which degrades proteins.


With GREEN and RED LIGHTNING You now have the complete solution for a clear, clean pond from one specialist supplier just like this customer's below! (Testimonial From C Bedford shown on this page)

Customer pond now free from Blanketweed

Splendid Products Ltd markets specific products developed by Biological experts and we are fortunate in having Dr J Lear BSc (Hons) PhD CBiol MRSB who has been involved in the development and U.K. production of both Green and Red Lightning.



Probably the Number One Blanket Weed and Sludge removers in the World!
Splendid Products, Wythe, Church Street, East Hendred, Oxon, OX12 8LA United KingdomTel:(44)01235-862540

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