I want to install a new Variable Speed Pump for energy efficiency. I believe I understand two settings to run higher for the cleaner and lower for just filtration. What do I need to do to run the solar which I believe will need to run higher to push the water through the solar system? I have a 25k gallon pool, pool equipment is ten feet from pool and is right next to single story house where water is pumped up to roof. Is a VSP still efficient if I want to run solar six months out of year? Someone said I may need an additional controller?