I bought a house that has two Super 11 pumps. One of those is a variable pump. They are both 1.5hp. I assume one is supposed tp be used for the pool features and the other for regular filtering. So should I just shut off the VS Pool pump and only use that one when running features, or leave them both on. Just seems like a waste of money having 2 pumps. Would it be better to just get rid of super 11 pumps and but a Hayward Tristar 2.7 HP VS pump that should be able to handle filtering and the features? I think that pump cost about $1900, an idea how much install would be? Thank you!