Blagdon Pond Barley Straw Bale, Small ars Algae, Green Water and Blanketweed, Natural, for Ponds up to 4,500 Litres

Safe and 100% natural solution for the treatment of string algae, green water and blanket weed in ponds Fish and plant friendly, pet and wildlife safe; the natural way to keep green water and algae at bay This treatment will take 2-6 weeks for full effectiveness as it relies on the natural bacterial breakdown of the barley straw to enable it to work The treatment works best when the water temperature is 10°C or higher when the algae growing It is recommended that the barley straw bales are placed in your pond in early Spring so that they can take effect when the algae begin to grow