So my AGP skimmer and return fittings are barbed as were my previous pump and filter connections, so I used the normal flexible pool hose that you clamped on. Now I have a new pump and filter (see sig); and with that I want to hard plumb to incorporate ball valves and unions for ease with maintenance and wintering. I have no idea how to make a good connection with the barbed fittings to PVC (wish the darned things were threaded!) How do I make it work? HELP