meintn- When fishdoc moved he sold his tank and sump to me, so I've got it right now. Unfortunately, because it's pretty snug under the tank I don't think I'd really be able to get a better picture than the one he posted. As he said, the only thing not in the picture is a bubble trap. This is just a small square compartment in the corner with holes in it at the bottom and a lid on top (with a hole just big enough for the return pipe in it). Fishdoc also made an alternate lid in which a filter sock sits nicely. This is nice for blowing out the rocks during a water change and catching most of the gunk. The bubble trap is pretty simple, but it prevents salt creep from becoming a problem with the water coming from the return and/or due to microbubbles popping on the surface of the sump (I literally have almost none and this tanks been running for a little over a year now).