Good evening Guys, I want to upgrade/replace my pool pump. I currently have a 1 1/2 HP Hayward Super II. I hear a lot of people saying to get a variable speed pump but I'm new to them and I don't understand how they would work with my current setup. Right now I run my pump about 10 hours during the late night/early morning hours during the non-peak hours. While the pump is running, only the popups are running. See the attached picture that shows my valve set up.
The Black Arrow goes to my Popups. Green to the Returns. Red to (2) Waterfalls.
Since only one of the 3 items can be selected at a time, I don't understand how a variable speed would work since the popups need a certain speed to operate. Any help is appreciated. Let me know if you need more info.