Im facing the same problem for my 9ft,im planning on using my 180g for the sump,its a 6x2x2 so the length is the same and it sounds like you have the same set up with the doors as me.
Mine will be made from steel not wood though,i will be having an open span of 74" as i dont think you need any more gap,also the gap may depend on the width of the doors im using.
In the centre il be having a panel that doesnt open to make up the difference to the size doors that are available if you know what i mean.
If you need all the doors to open then just have removeable uprights which you should easily be able to mount your doors on.
Steve
Mine will be made from steel not wood though,i will be having an open span of 74" as i dont think you need any more gap,also the gap may depend on the width of the doors im using.
In the centre il be having a panel that doesnt open to make up the difference to the size doors that are available if you know what i mean.
If you need all the doors to open then just have removeable uprights which you should easily be able to mount your doors on.
Steve
