ok looks like tank is coming Friday i set up delivery time. - I'm going to get the aqua stat to turn on/off circulator to and from primary loop to tank. - going to get grufundos 15-58 3 speed circulator - will use 1 1/4" pex to and from primary loop to tank - will put ball valve shut off from primary loop to circulator (circulator will be on pex line from primary loop feeding heat to tank), and one ball valve shut off from tank supply to primary loop. - on farmtek.com i can get a few wired mini digital meter panel for tank temps. http://www.farmtek.com/farm/supplies/ProductDisplay?catalogId=15052&storeId=10001&langId=-1&division=FarmTek&productId=910879 - i might just put baby monitor with video looking at tank temps in basement and then i can check tank temps easily from first floor looking at monitor. -will put 1inch foam and or the plastic from dry core under tank. my basement is finished floor with click in lay laminent/engineer material -only other thing i'll need is proper flange for circulator, and pex tool to handle 1 1/4", hopefully i can rent one... hows this sound?