AQUA~HOLICS
In The Industry
Sorry I should have explained it in more detail. As you look at the picture you are looking from the spa to the pool, take note at the bottom of the tile line as it has deeper water at the spa than at the ending point spillway to the pool. This is how the tile in the spillway stays under water when the pump is off for typically 16 hours a day and not exposed to air and evaporation.