First off thanks for all the help so far. The bleach shock worked great and my pool has gone from the black lagoon to almost ready for the swim season. I've kept the Chlorine levels at 10 ppm since because the water is not yet crystal clear.
The water still has a white haze to it but no hint of green at at all. I suspect that there is still a small amount of DE suspended in the water. I changed to a cartridge type filter from and old DE about 2 weeks ago and have been brushing and vacuming every other day. The water is mostly clear, I can see all the way to the bottom. It looks fairly clear during the day but not crystal. At night when I turn the pool lights on I can see that there is definedly suspended particles still there. I have been running the filter continuously since I changed out the filter. The Ph is 7.6 right now.
Is it possible for some DE to pass through a cartridge filter? I thoroughly spray out the cartridge when the pressure has gotten 10 psi greater than when clean. I can't seem to get the water any cleaner at this point. Is this a time to use a clarifier? I have been holding off and don't want to add any more chemicals than necessary.