We'll be moving soon, so I'm taking the opportunity to replace my 125 PetSmart stand with a diy stand. I've built the stand below for a 4ft 55 and it's worked great for over a year. What changes would need to be made for it to work on a larger tank? I plan to make the green uprights even with the top edge of the red and yellow, also 2x6's for the top frame. A few more blue peices will tie it together and a few uprights between the top and bottom for support and to let me attach a removable front. The bottom and back will be covered with a sheet of plywood.