Who a PVC pipe as a filter tube abused with slits 2 mm course has a large proportion of sand in the water. At a speed of 2900 rev / min, the impellers and diffusers are constantly sandblasted and therefore destroyed. My fountain is filled with 17m deep 8m filter pipe DN 125, slot width 0,5mm.Ringraum with filter gravel 1-2mm. More than 3years the pump runs daily over a pressure vessel 80Ltr., 10bar fully automatically without any problems. Top-pump for dumping price !!!
