Controlling aquatic weeds is very difficult. If you do wish to tackle weeds in streams or lakes, ask for expert advice first.
The best thing to do is to stop new weeds from reaching waterways. This includes:
- Cleaning all weed from boating equipment, gear and trailers before moving to another area.
- Removing all fragments of weed from fishing nets and gear before leaving an area.
- Emptying aquarium contents onto the compost heap, not into or near a waterway or drain.