Should I run my pump 24/7?

Definitely don't have to. Most people here run their between 6 and 10 hours a day. You're looking for at least one full turnover of water per day, plus enough to keep the water clean and clear. Maybe start with 12 hours a day, and if it still looks good, back it off by an hour every couple of days. Every pool is different, so just find what works.
 
It depends on different factors, such as, do you have different rates during the day and at night, do you have a SWCG, when do you regularly use the pool.
I've recently increased my run time because of the chlorine demand and the SWCG to 10 hours might have to increase to 12 hours. There is a link in pool school determining pump run time. Good info there.
Here's the link: pool-school/pump_run_time
 
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