I just built a 46 gallon glass tank with center overflow, however, it's on the inside. How were you thinking of putting it on the outside? Would you notch into the glass? What about just a hole drilled in the back wall and a 90 elbow as your overflow. We do a lot of client's tanks like this and it takes up minimal room...
One halide should be sufficient, it would be awesome actually.
Des
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