I did a complete rescape. Changed everything in my tank from gravel and driftwood to sand and rocks. I'm using my old filter that has been running for about 2 years maybe longer now. My water is cloudy not extremely cloudy but it is still a little cloud. Also since I had driftwood in my other tank tannins leached out and made my water a tea color I didn't mind it because the color went great with the kind of fish I had. Now my tank has a very little tea color and i wanted to get rid of it with the carbon and get rid of the cloud with acurel f but I'm not sure if the carbon would negate that.