I have an intex sand filter with the clear lid on the pump filter basket assembly. The pump filter basket is typically full with water with barely a tiny air pocket at the very top and I hear no surging. When I turn the air relief valve while the pump is running, it actually sucks air IN to the filter pump and the water level drops down in the filter basket and it starts to surge. If I close the relief value, it slowly fills up with water again.
Any hints as to why that would happen? My hoses that lead from the filter basket to the inlets for the pool drop down below the filter level and then up to the T connector and then two hoses up to the inlets from there. One of those hoses doesn't get too much water because I'm using a flow restrictor on the inlet in order to get my intex skimmer to work properly (according to the skimmer instructions).
Any hints as to why that would happen? My hoses that lead from the filter basket to the inlets for the pool drop down below the filter level and then up to the T connector and then two hoses up to the inlets from there. One of those hoses doesn't get too much water because I'm using a flow restrictor on the inlet in order to get my intex skimmer to work properly (according to the skimmer instructions).