Our dam was covered in a variety of weeds. We could hardly see the surface of the water. It looked terrible. I managed to get most bullrushes out during the dry season but what a hell of a job. Then it started to grow back. I contacted the Dam Doctor (Darren) and within 4 days the dam was clean. I mean 100% clean. Job was done in a day. Price was very good. Darren is easy to work with and true to his word. I highly recommend his work.