in-wall tank people, need help

[Mrfish55]

If you look thru my build thread http://www.canreef.com/vbulletin/sho...&highlight=750 you can see how I did mine, basically a platform, one end sits in the opening on a short wall and the other supported by legs (I have another short wall in the middle of mine but you will not need that) This way once trimmed out the tanks is very close to flush with the wall.