A few words of caution to people who don?t know that concrete can float. If by any chance your pool is empty at the moment, and you are in an area with a high water table, such as Costa Azul or Perla Marina, I suggest you fill your pool as fast as possible or take a bar and break out the main drain to relieve the pressure. The water under the pool WILL cause it to float. As of this morning, we have 2 customers that have ?floaters? and this is a very serious and expensive problem that can be prevented