Zero project management and weak contractors utilized. Be prepared to manage this project yourself and learn how to install/properly glue 1,1/4” pvc piping. Also learn how to leak test your piping work before burying it in the ground and pouring new concrete on top of it. “Expert” pool builders failed to do this and resulted in a pool leak. My experience with “Expert” pool builders temporarily motivated me to start my own pool installation company, since I had to learn how to finish every single aspect of the project. Be sure to think thru your pool ground water sump system. Mine could have easily been gravity drained, had an “Expert” Pool Builder taken 5 minutes to think about it. Instead, I now have a system that requires a sump pump and garden hose, along with some scheduled maintenance after heavy rains. If I could rate zero Stars, I would still be dis-satisfied....