Naturally clears green water and blanketweed from ponds.This product works at least I 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.
250ml (treats 1,000 gallons for 6 wks)
500ml (treats 2,000 gallons for 6 wks)
I litre (treats 4,000 gallons for 6 wks)
6 litre (treats 24,000 gallons for 6 wks)
