I never bothered either, Kept skimmer outlet away from sump outlet and set the ato to suit the skimmer, worked great for me
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- 33 Gal - 20Gal Sump, MP10/Hydor Powerheads, Aquaticlife 4x T-5HO, Vertex IN100, TLF w/Biopellets, Tunze ATO
-45GAL Build in Progress!-
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