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you HAVE to step it down to 1/2 or 3/4 inch otherwise you'll get air into the skimmer from your drain. I would recommend stepping down to the 1/2". You'll want to place a ball valve after the T to get a pure and consistent flow of water into the skimmer. I think ER recommends around 150% total volume through the skimmer. I'd play with that to find the actual sweet spot. |