A spa (sometimes also referred to as a hot tub) can be added to any style of in-ground pool, adding yet another level of beauty and excitement to the backyard. On a fiberglass or vinyl-liner pool, a spillover spa is the most likely option. (The spa is placed at the edge of the pool, with essentially a waterfall that allows any excess water to spillover directly into the swimming pool.)
With concrete pools, on the other hand, youre not limited to a spillover configuration. Your spot can be above the pool, below the pool, inside the pool, completely separate and outside of the pool, etc. It can be simple and basic, or built with a vanishing edge or perimeter overflow. With concrete, the options and styles for a spa are as limitless as the styles and options for the pool.