Looking to build new 25,000 gallon pool. i have interviewed several pool builders that are recommending Variable speed pumps. they want to run the 2 hp motor at half speed to save energy during normal circulation, and speed up to turn on water fall, etc.. My thought is to use a 1 hp pump for circulation and a 2 hp or a second 1 hp pump in parallel, as the 1 hp motor will draw less amps than the 2 hp motor running at half speed? Can anyone confirm?