We love this big pressure filter. Make pond maintenance a breeze with fingertip cleaning. This pond filter has a motorised self-cleaning feature that does away with the need to manually cleaning. Simply set the filter to \'cleaning\' mode and a 3 minute cleaning program is automatically launched. Audible siren lets you know that cleaning has finished. Simply wash the dirty water away to \'waste\' and enjoy sparkling water in your pond once again. NOTE: UVC bulb included.