More than 400,000 megalitres of water has been pumped down the Murray River to stop toxic blue-green algae killing aquatic life.

The algal bloom has spread over 500km and forced water to be turned off in some towns.  Victorian Water Minister Lisa Neville said there is no quick fix to the algae problem. “What we really need is some significant rain,” Ms Neville told reporters. “Or we need to wait until…