Scientists have warned that more needs to be done to treat the cause of the invasive water hyacinth that has exploded on the Hartbeespoort Dam in the North West province. They have called on authorities to tighten regulations on wastewater management in order to deal with the problem. The dam used to attract countless tourists due to its scenic landscapes and recreational water sports. Now, visitors are greeted by the sight of boats stuck in a sea of hyacinth weed. To expand a bit more about the subject, Elvis Presslin spoke to Patrick Ganda, an Environmentalist with the Grootvaly Blesbokspruit Conservation Trust