@ElonMuskZAB It depends. Based on water flow volume and pipe restriction I would say that with a high flow volume of water 7 would probably fill first then possibly 6. But depending on the area in which this experiment is located, 9 would be next but not necessarily through the pipe, but from
@joeldcatalan Outstanding! I haven't been on here much for quite some time myself. Its been quite a cesspool... But hopefully that's changing. It's good to see you on again. Give my best to your lovely wife and the kids!