Bestway Flowclear 3000 gal Sand Filter SystemThis high capacity grey sand filter pump delivers a system flow rate of 8,327 L h to effectively manage water purity in medium to large above ground pools. Compatible with pool capacities between 1,100 and 66,600 Litre, it features a 500W motor and uses a standard UK 3 pin plug. The unit requires approximately 36 kg of #20 silica sand or 1008 g of filtration balls. It is designed to fit 3. 8 cm threaded valves and includes adapters for 3. 2 cm