So nice I can turn to this place for decisions like this. Just plumbed and wired in my new Ecostar SVRS pump. LOVE IT! Currently have a ec75 filter. Seems to work just fine.... Although not sure I am getting the flow I need. I can get a used sta rite system3 300sqft model for a steal of a price. Is it worth replacing my ec 75 with sta rite? Any input is greatly appreciated.