I need some help with a geo design delema. This is only the second geo system I've installed but you gotta start somewhere. Anyhow the original plan was to drill 5 150 ft wells for a total bore length of 750ft. That all changed when we hit a huge mine at 120. So we decided to go with 8 100 ft wells. Now my question is this. Can we series two wells (pair them) in such a way that we have only four supplies and four returns to and from the home? Or is it preffered to bring all eight supplies and all eight returns to and from the house? The first geo I did only called for three wells but we bored them, had the pipe in and grouted before lunch. This one we've been on for three days just drilling, what a nightmare. Help......Please.