Pictures of My recently completed Ap build. I tied my old AP system to the new one. i buried the 55 gal drums part way connected with a water bridge and a overflow for back up. all water returning is directed into a mechanical filter ( 5 gal bucket w poly fiber. no fish added yet still cycling the system. I added a color changing LED strip under the streams of water ( 1/16th holes about 6 inches apart for 12 feet) for lovely effects at nite.