I am using a DE Pentair 2000 (discontinued) and in daylight the water looks great, sparkling clean. The chlorine and Ph are good. However, at night, if I put the pool light on, you can see particles in the water. I ran the pump for 24 hours (normally I run for about 6 hours and if people are in the pool) and the water looks the same, I can see particles in the water. Last Saturday I cleaned the filter, taking the filters out, hosing them down and added the required amount of DE. The pressure looks good. So, is the filter not cleaning properly or should I expect to see some particles in the water ?
I just started looking after my pool myself. I reckon it is about 15,000 gallons.