Atlantic Complete Basin Kits are the heart of Atlantic Formal Spillway Systems. The Basin Kits provide everything you need to install Colorfalls, WaterWalls and Spillways. Three sizes of self-contained basins, complete with pumps and plumbing, accommodate 12, 24 and 36-inch Formal Spillways. Seamless installation with four-inch garden block. The Basin Kits include basin, Splash Mat, pump, plumbing, PVC glue, adjustment valve and Auto Fill, all in one box.