King British Blanket Weed Control - 250g Treats 2272lts / 500gal

King British Blanket Weed Control contains naturally occurring bacteria that are harmless to fish and plants. It effectively competes for nutriants in the water that blanket weed needs to grow. Begin treatment in early Spring through to early Autumn. Preventative treatment is much more effective than treating a pond overgrown with blanket weed and algae.