Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Perflex perfection

I received the ec40ac in good shape and had it installed in about an hour including a run to the nearby pool store for some fittings. If you use the flow regulator a good tip is to purchase a short 1.5 inch npt thread coupler and install that first with the flow regulator tightening until the flow regulator seats fully. Then thread your hose fitting on the short adapter. This allows you to angle the 90 deg fitting any direction you want and also fully seats the flow regulator disk. My 24 ft round above ground pool was foggy when I opened it up and it cleared up after about 3 hours. Much better filter than my old doughboy filter with 20 sq ft filter area rathe than 12.5 from the doughboy. Had the Hayward in Fla years ago and loved it. Still feel the same about this new one. Much better than a sand filter.