You could also add a bubble curtain. Similar to an airstone, but they're longer and come in a number of lengths. You can place them vertically or horizontally and you can even join several together to go around corners.
yes I have an airstone and a bubble wall but they make such a large current that its hard for the fish to get food off the top of the water before it falls down. Right now I am trying to find the things that just put up a few bubbles at a time like ornaments do except its buried under the gravel. I have seen these things in the stores but now I have to figure out what they are. Thanks for the help everybody.
I have air control/adjustment valves attached to my 2 airlines leading to 2 airstones from the airpump. This way I can decrease and increase the airflow to the level that I want, and to the level at which it's gentle enough for fish. Valves are very cheap and you can get them at any fish store.