I did some searching and found a few threads that address run times, off peaks hours, etc.
Just like everyone else, I'm trying to maximize my pumping efficiency. I have a 15'x30'x52" above ground using a Hayward Pro Series 150 lb. sand filter(unknown age but in good shape) and Hayward Power-Flo Matrix 1 HP pump(3 months old).
My pool water looks clear overall and all chemical parameters are in check.
I've been experimenting with multiple on/off cycles trying to keep total daily pump run-time under 8 hours within a 24 hour period. For the past week I've been running the pump starting at 8 AM...on for one hour, off for one hour, totaling 6 hours(8 AM to 7 PM ). Water quality looks good. My next schedule might be on for one hour, off for two, totaling 5 hours (8 AM to 9 PM). I have many small plants/flowers on my pool deck and small debris from this randomly enters the pool. I like to see a clean water surface so having the pump off for several hours during the swimming hours(10 AM to 8 PM) is not good. Two nights per week I clean the bottom with a cheap Baracuda Ranger, overnight (10 hours each).
If I use a timer schedule with 5 on/off times will this shorten the life of the pump compared to one on/off cycle within a 24 hour period(if total run-time was equal)?