Blagdon Small Blanketweed AlgawayEffective pond treatment against blanket weed and string algae Encourages pond plant growth Easy to use Wildlife and pet safe Easy answer for clearing blanketweed Pond Blanketweed algaway kills blanketweed and string algae which can then be removed from the pond to prevent further outbreaks. This treatment will also help to encourage healthy plant growth To increase the productivity of the treatment, remove as much blanket weed by hand as possible.