Quote Originally Posted by leena View Post
I just upgraded to a smaller pump (1HP, 2 speed) and bigger filter 300lb (24"), so I will let you know if it keeps my water clear.
A pump has very little to do with keeping water clear. That is mostly about chemistry. Keep FC in the range of CYA, and your water will remain clear. However, you need to get ride of the algae first.

Quote Originally Posted by Leehicks79
I currently have a one speed 1.5 HP motor with a 19" sand filter. From reading on here, I feel like it's too much pump for my filter. Of course, when I call the store, they say that's standard for a 24' AG. I am used to running the pump 24/7. If I go to a 3/4 or 1HP variable speed, will I be able to keep it on "low" and run it all day and see the same results (i.e. clear water)?
You can run on low but I wouldn't bother running the pump 24/7. That is just a waste of energy. Even on low speed, you shouldn't need much more than about 6 hours per day. Again, clear water has very little to do with the pump.