I am moving within the next few months and was going to break down my 40B AIO in-wall build to deal with some aiptasia issues and QT my fish properly. I have floated the idea of doing a proper setup with a overflow box and sump but am on the edge. I am worried about aiptasia clinging to the foam wall and coming back to bite me so I might get a new 40B and 20G for a DIY sump. I do have several larger scale pumps around 500-800 gph and a large skimmer/pump I can use in this reboot. I am trying to keep this reboot cost under $400 or I can try to sanitize the foam and do some resealing on the wall. Either way it will be a pain in the butt. Is drilling the better option in general? Any overflow boxes you would recommend for a budget build? Is a DIY sump a bad idea?