Hi. I hope somebody can help me. I've moved into a new house which has a stream in the front garden. It is essentially stagnant water and more like a pond unless we have a decent amount of rain which then makes it flow. It just realised that there is at least 2 ft of sludge / silt which I would like to remove as I think it is dangerous for my little girl. I went to a garden pond shop and was advised to spend £300 on a pond vac which simply is not up to the job. Any advice would be much appreciated. Cheers Pete