We are in design stage and have a crude oil stabilser. Pro II shows that water cannot exist in hydrocarbons lower than tray 4. We have a nozzle on tray 4 which has a 6" line to a separator which is under interface control. The water is dumped to produced water tank and the hydrcarbons returned to the stabilser. my experience has only been on manual water draw. Any comments on interface control and how well this system will work?