Here is some good information on sumps:
http://www.reefkeeping.com/issues/2003-01/gt/index.php
here is marine depot's overflow boxes:
http://www.marinedepot.com/ps_aquar...ow_boxes_cpr&gclid=CNWhhZW9sJ0CFShSagodmBdBiw
I think it would be cheaper to find some one to drill the back. You would then glue in an acrylic overflow box. Hopefully this helps.
-chris
http://www.reefkeeping.com/issues/2003-01/gt/index.php
here is marine depot's overflow boxes:
http://www.marinedepot.com/ps_aquar...ow_boxes_cpr&gclid=CNWhhZW9sJ0CFShSagodmBdBiw
I think it would be cheaper to find some one to drill the back. You would then glue in an acrylic overflow box. Hopefully this helps.
-chris