Algizin P quickly kills blanket weed in pond gardens - usually within 1 week. Safe with fish, plants and filtration bacteria.
Remove the majority of the blanket weed prior to treatment, to reduce the amount of dead algae decaying in the pond. Leave biological filtration running. Switch off U.V sterlisiers and remove carbon and / or ammonia removers. Resume after 72 hours. Contains colour dye, avoid contact with skin, clothes and furnishings. Aerate the water during use.