Thats looking really nice. I am forgoing the custom stand idea and just using the stand designed for the cube. However I am planning on drilling chamber 1 and 3 with a 1" drain. I wan't to make a "herbie" style so chamber 3 will be primary and 1 will be a emergency with it set at the water height. I am debating if I want to run the stock pump with a T into the return from the sump or just take it out. I plan on having 2 P.H. on each side of the back wall to be able to create a gyre with the return in the middle towards the surface. Maybe kicking on the stock pump for increased flow every now and then. I will also be using mostly dry rock with a little live maybe. I might just run live rock in the sump. So chamber 1 will be emergency over flow to sump and possible heater depending on sump size, chamber 2 will be Intank media baskets with carbon and other media, possibly Tunze 9002 or 9004, or skimmer in sump, again need to determine sump size. Chamber 3 will be drain to sump, return and stock pump(maybe). DT will have 1.5-2" live sand and dry rock with 2 P.H. on back wall. Sump will have at least a fuge with live rock and probably cheato. Possibly sand as well, still reading pro/cons. ATO will be set up for the sump. Going with stock lighting now but will upgrade down the road. Let me know what you think or should I modify my plans. I plan on drilling in the very near future.