The unit works great so far for the price and type. Be aware, this unit is not the continuous use type, it cycles on for about 20 seconds then off for about 30 seconds to drain. Because it's a bit slow (by design and size) I do not use this for cleaning my entire pond. It works well for deep cleaning my actual filter systems and for basic spot cleaning. If you place a filter sock at the drain hose end and let it hang back into your pond you can waste less water.....or recycle the water to your garden without discharging the larger debris.