I never found any DE.. I will say this today looks better I can see the bottom now just a little bit. At first I could only see about 1.5 to 2 foot down pool is 52". I am running filter 24/7. The pressure gauge is broke it is my second one to go through. Do I need to get another? The return is very powerful. I put 4 big jugs of chlorine in last night my TC is on 9.0 I checked it again today with a pH of 7.5. Thanks for your time and help... We will get through this the main thing now is patience part.. I will read the link you sent... Once again thanks....