Hello all. First I wanted to thank everyone for your help with the PH and copper. I finally got the ph, and all other reading into the normal range. However, now my water has turned cloudy. Through all the PH and copper problems, the water has been crystal clear. Just today, it's turned. I did notice something I think is out of the norm. My pressure gauge is higher than usual. Last year, the pressure after I would backwash and add the earth, would be about 12 lbs. Today, the pressure is up near 20 after backwash and earth. Could it be the low PH did something to the filter? I have a Haward DE3620 filter (it's a large barrel type, with the fingers inside). Could they be clogged and not clearing when I backwash? Thanks again for your help.