MLG,
I have a saltwater pool and you have to run longer to generate the amount of chlorine the pool needs..
I like making a little chlorine all the time, rather then making a lot of chlorine all at once, then hoping it lasts until the pump comes on again.
I also like skimming all the time.. You won't find junk floating in my pool..
I like the look of my pool when there is a little motion to the water.
The cost for me to run 24/7, mostly at 1200 rpm, is less than $20 bucks a month, and I have an
old 3 HP IntelliFlo pump. Newer pumps are much more energy efficient.
Without a shred of proof, I believe that it is much better on the pump to run 24/7, than it is to start and stop it every day. Until just this month, I had three pools, that all had 3 HP IntelliFlo pumps running 24/7/365.. They have been running this schedule for well over 12 years, and the pumps operate today just like the did when they were new.. I recently sold my two rent houses that had pools, so now I just have the one at my house to 'play' with...
Many members here run 24/7, others here think I am crazy for running 24/7.. That's ok, as I think they are crazy for not running 24/7...
It is not a requirement, but it makes me happy and makes my pool maintenance easier.
You should do whatever works best for you.
Thanks,
Jim R.