Blanket weed is one of the most hated problems of pond keeping and a nuisance to everyone as it makes your pond unsightly, blocks filters, pumps and pipes. Stop Blanketweed is a unique product which will kill & prevent the regrowth of blanket weed if used as instructed. Stop Blanketweed is easy and simple to use, it contains no harmful chemicals and is safe for all pond inhabitants. Stop Blanketweed is HSE Approved and doesn�۪t affect your ponds clarity. Evolution Aqua�۪s Stop Blanketweed should be used as an aquatic Algicide.