Most pools can be turned from green to clean without draining any water.
The whole process usually takes between 3-8 days, depending on how long the pool has been polluted or how severe the problem is. No algaecides are being used in the process and the cost is a lot less than draining and refilling the pool.
Below are some before and after pictures of a pool that we turned clear.
06/09/2010
06/17/2010
06/09/2010
06/17/2010
06/09/2010
06/17/2010