Clarkes finest top quality submersible pump handles both clean & dirty water. Robust build, & a heavy duty impellor means the CSV2A Vortex Pump will not only handle dirty, brackish water, it's also able to pass solids up to 30mm diameter. &, even better, it's fitted with an automatic float switch, a simple yet clever device that switches the pump on as the water level rises, & switches it off once the pump has done it's job & reduced the water level.