Quote Originally Posted by CarlD
Pumps can be "up-rated" or "full-rated", and the latter is closer to the real HP. Still, even an "up-rated" 1hp pump should EASILY handle your pool, and won't have any trouble moving your water.
Actually, up-rated pumps labeled HP are closer to the real or braking HP, since their service factors are lower. The true HP of a pump is:

Braking HP = Labeled HP * Service factor