I'm getting ready to close my pool and it has a spillover spa attached to it. The spa has the same kind of jets as the pool and I believe the main drain is in the spa since when I drain the water the spa empties first before the pool starts to drain. It also has just the one skimmer. My question is how so I blow out the lines to make sure the spa lines are emptied also, and do I have to do anything with the main drain after emptying the spa and should I refill the spa to below the tiles? This is the first time closing it, I usually run it through the winter but last year we had a "snowmageddon" in Oklahoma and it almost stopped running due to the ice. We got lucky but I don't want to chance it this year So I wanna close it, just never done it before. Thanks for any help.