ManoMano offers you an Arebos sand filter with a nice discount. Suitable for pools up to 40 m³, the pump has a flow rate of up to 10,200 l/h.
The filter works with conventional quartz sand, or with polyethylene filter balls. The latter have a large capacity to collect impurities, and they are washable: they can be reused, allowing you to save money. The sand tank, on the other hand, requires 20 kg of sand to operate.