Hello Everyone, Has anyone built a Hot tub with ICF. If you have, do you located the perimeter pipes in the middle of the ICF or outside of it? And if you locate them inside, do you put foam around the pipes ? Where within the ICF do you locate the pipes ? As outside as possible to be able to access them in case of trouble (just need to dig some foam?) Finally, I have exhausted my Google search skills for building an ICF Hot Tub ... do you have any plans/references ? I will for sure post a you tube video if I succeed :) Thank you.