P prion27 New member Aug 3, 2024 #1 Joined Apr 14, 2024 Messages 140 Likes 13 Points 0 Location OC Aug 3, 2024 #1 . Last edited: Aug 18, 2024
JohnBRZ New member Aug 3, 2024 #2 Joined Jul 12, 2021 Messages 235 Likes 124 Points 0 Location Fountain Valley Aug 3, 2024 #2 I don't have a RedSea sump but you normally put the ATO sensor in the Return pump chamber
J Jimbo327 New member Aug 3, 2024 #3 Joined Oct 2, 2007 Messages 1,208 Likes 858 Points 3 Location Orange Aug 3, 2024 #3 Yup, return pump chamber for ATO.