The smooth surface inhibits the growth of algae and makes the pool a lot easier to keep clean. Another huge advantage of the fibreglass pool option, is that young kids using the pool do not take skin off their knuckles or feet or knees as a result of being in the pool for hours on end and making contact with the rough interior finish that is standard with a concrete pool. Really though, it is all about having a great looking pool for minimal effort throughout its long life.