I recently purchased a Hayward pump/filter (VL series) for my Intex 20 ft pool. I haven't been able to get it set up correctly. I have the hoses that came with my intex pump that I'm trying to use. Is the possible??

We keep getting air in the pump and having low flow. The pressure gauge is only reading about 2 psi when we run it in filter mode. I'm not sure what to do. I don't have any experience with a sand pump/filter.