Blagdon Pond Barley Straw Extract
Size/Pack Size: 500ml
Naturally clears green water and blanketweed from ponds. This product works at least 1 month quicker than ordinary barley straw and is far easier to control.
The extract provides the by-product of the straw breakdown that kills algae.
Extract of Barley Straw is harmless to all vascular plants and all water born wildlife.
500 ml treats 2000 gallons for 6 weeks