Blagdon Pond Duckweed Buster, Controls Duckweed, Safe and Natural, 250ml, Treats 2,273 Litres of Water

A natural bacteria that controls duckweed efficiently by starving the plant of essential nutrients Harmless to pond filters and all species of pond fish and plants and water using wildlife Easy to use dosage chamber on top of bottle makes it simple to measure the correct dose for your pond Follow instructions on the back of pack for dosing requirements for your pond. This product cannot be overdosed This product is most effective when the pond water temperature is 10°C or higher, use regularly until the duckweed has cleared