I have a Tiger River Bengal Spa that seems to have a leak....it's resting on a solid/porous patio so I can't look under without tipping it up...I was wondering before I drain the Spa, what is the construction inside the spa???? Will I be able to see the pipes or are they encased in foam???? What is the most likely spot for a leak???? I checked the component enclosure but no leaks there... Any help would be appreciated...Jim