Available in a range of flow rates from 4800-30000 lph, the Swell Multi Pump Premium is suitable for external and internal use in a pond. The Swell Multi Pump Premium is a multi-functional pump that can run waterfalls, streams and features. This pond pump has a high-performance impeller with overheating protection. The Swell Multi Pump Premium range all have large filter baskets, making them fairly low maintenance pumps. Simply detach the basket and clean it in a bucket of pond water. Models 4800 to 10000 have a flow adjuster that can only be used when the pump is positioned underwater. Models 13000, 16000 & 30000 have a plastic strainer cage, 13000 & 16000 come with an additional hose tail for dry use.