"We have been plagued by blanket weed and duckweed all summer. Have tried several products, some expensive, some sort of worked.
The net bag works very well and tethered on string for easy removal. In just a few days after the pond clean which is recommended, I saw the duck weed start to return. Within literally hours of putting in the barley flakes the weed disappeared and has not returned. This was two weeks ago.
I would also recommend, clean the pond out before starting the barley flakes. I also poured a solution with the barley flakes around the pond and dunked new plants in a bucket with the barley flakes before putting them in."
Valorado domingo 12 de noviembre de 2017