Please keep in mind pool finishes are hand troweled to create a smooth finish, but your new pool may naturally have a wavy appearance which will be magnified by an underwater light. The curing process will occur over the next ten to twelve months, but the first 28 days are the most critical. During this time pool surfaces are most susceptible to scaling, staining, and discoloration. Proper filling and start up procedures are imperative to help this process begin. Never turn the water off completely while a pool is filling. The pool finish is extremely vulnerable until it is covered by water! There are many things in the environment which could stain or discolor the finish including fertilizers and deck or lawn maintenance chemicals.