Sinks and basins can easily get blocked or clogged, in this vide we have a basin that takes approximately 20 minutes to drain because the waste from the basin is so badly clogged. Several methods are attempted to clear the blockage but only one real method really works. Firstly the Rothenberger Ropump is used, but this is incredibly difficult to use as you need three hands to be able to use it on this basin as the tap is directly over the plug hole. Then boiling hot water is used, which did nothing. A chemical drain un-blocker called Instant power, heavy duty drain opener. This did work and helped the water drain but it did not open the drain fully. Lastly power plumber was used and this easily unblocked the drain with one application.