Pool Info-IG Gunite approx. 18,000 gallons. Recently installed Hayward Swimpure SWCG (up to 40,000 gal)
1-HP Pentair Whisper Flo and Tagelus 60D Sand Filter.

I have been battling water cloudiness for awhile now. Setting aside all the chemistry aspects of the pool for the temporary time being, do you think my filter/pump combo is right or wrong? I bought and installed both myself about 2006, and then this year replaced the bearings in my motor.

It seems that even when my pool chemistry is good, and the water has a good color, there is always a cloudiness or blur in the water. I changed my sand earlier this summer, and it helped some. I'm on the verge of going back to a DE Filter now that my skimmers are operational (long story). The filter shows delta-P over time, as you would expect, and when I backwash I do get the typical dirty looking backwash water. I am almost certain than when I backwash I am losing sand, and I noticed that when I changed the sand that the level was a little low. I am trying to keep my backwashes down to a minimum.

Open to suggestions and comments.