Ms,
If you had a green pool and did a SLAM then you will definitely have to initially clean the filter a lot.. If you have 4 large cartridges you most likely have a CCP 420 or 520. That is what I have.
You run the pump for just three or four main reasons..
1. To generate the amount of chlorine you need if you have a SWCG or use a Tab feeder.. If you manually add liquid chlorine this line does not really apply.
2. To skim the debris off the top of the pool water.. This really depends on how much stuff falls into your pool and how picky you want to be...
3. To mix any chemicals, such as MA or Liquid Chlorine, you only need to run the pump for 2 to 4 hours a day..
4. If you use a suction or pressure side cleaner, you need to run the pump long enough to clean the pool. 2 to 4 hours, depending on your cleaner.
There is no reason you can't do #3 and #4 at the same time...
Your RPM has to be fast enough to turn a SWCG on, or to make the Tab Feeder work. Usually this is about 1000 to 1500 RPM.. Just depends on your pool.
Your RPM has to be fast enough to make any suction or pressure side cleaner work.. With a booster pump this should not be an issue even at 1000 to 1500 RPM..
Your comment.. "It is just a matter of me figuring out what is working ?." is exactly what has to happen. You just need to play with it and find out what works for you.
You only want to run at a faster RPM to do something specific.. As an example.. if you have waterfall, you would increase the RPM to make the waterfall work the way you want.
Keep in mind that chemicals keep your pool clear and sanitized.. The speed of your pump and how long you run it has little to do with the quality of your water.
Edit.. This does not mean you can't run your pump as long as you want.. It is just not required.. I run my pump 24/7 for a number of personal reasons...
Thanks,
Jim R.