This pool has four different levels with the spa being the high point of the project 30" above finish floor of the house, level two is the glass tile wet deck just below spa spillway, level 3 is the main pool, level four is the lower trough which is at rear patio level. Homes that do not have the proper slopes for vanishing edges, can reverse the topo and create the negative edge that faces the house for a dramatic view, and create wonderful flows of water running towards the house and create incredible views