I have a 14 x 4 intex pool with a saltwater system & the small filter that came with it. This is the 2nd year for the saltwater system so I know how to take care of it, but this year I have issues with low flow alarm. I checked all the logically issues with no avail. I decided to upgrade my pump to the bigger 1500 one. My pool does not currently have plunger valves nor did the new pump come with them. I do, however, have an adapter from the saltwater system that I could use to connect from the pool to the hose. So, I am wondering if I really need the plunger valves & will the new filter work just as well without it?