There really isn't much to putting the tank in the wall. Just score the sheetrock, take it out, demolition saw the wood, frame it out, and move the tank. Definitely do a search first. I can take closer pictures as well if you'd like. I had more trouble deciding on the design of the sump than the wall. As for the mods, the smaller one on the left was built by another reefer while I built the one on the right with the kit from MJmods. My only complaint was that I ordered the kit and made it while watching the video on reefvideos. However, they sent me the new shroud and the video doesn't take the new shroud into consideration. I made it work but it needed many adjustments. I still do not get the stopper idea. Overall, they put out a lot of flow for a relatively inexpensive powerhead.