I just had our new tub delivered last night. It is a Jacuzzi J245. Shouldn't I be able to completely turn the pumps off and have the water still? The first pump is always running on low, and if I press that button, it pumps harder. If I press it again, it just turns that pump to slow and not off. Is this the way it is supposed to be? The guy who set it up said it was, but I feel like it is wrong.