Aquaforce Pond Pump. Aquaforce 2500 - Max flow 2500 litres per hour - 1850 lph at 1m head. Aquaforce 4000 - Max flow 4000 litres per hour - 3000 lph at 1m head. Aquaforce 6000 - Max flow 6000 litres per hour - 5550 lph at 1m head.
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