well, I would go with most of these peoples suggestions IF you have a fuge, If your looking to lower nitrates and add to the beauty of your system I wouldn't really put any of the algaes in the main tank as they tend to go crazy anbd grow on everything then you can't get rid of them. I wanted to keep my nitrates low in my tank and also do it in a way that is natural and looks good. there are a couple options here, depending on the depth of your sand bed. I added Shaving brush plants and shoal grass and they look fantastic, and fish hide in them and pods love them, they also remove nitrates. You could add something like maiden's hair or turtle grass as well. I know a respectable online dealer that can supply all of these. just PM me if you have and questions, also search for my thread "New Digital Camera" if you want to see what they look like in a tank.