here is how mine are.
when I do it again I will have the bottom drilled. The simple reason is that I can have the sump under the tank and the stand can be no longer than the tank as it is going to built into a wall. If you don't mind the stand being longer then the tank then drill on the side but the Illusion of having more room with a box that is 1/2 way up is just that .. a Illusion. I mean sure there will be a extre strip that is water and not overflow box but that space is not realy goodfor a lot of things as it is in the bottom.. I guess you could stack the rocks around it and make a awsome hiding place for your fish.
This is what I am going to be forced to do when I move my tank to get a "Proper" overflow set up but if I could take all my sand bed and such out I would make a box that goes all the way to the bottom but is only wide enuf to enclose my piping. this way I would have the full lenght of the tank and the overflow could be hidden with thin rocks.
Steve
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