To answer your question in the other thread, this is what I'm planning to do: http://www.reefcentral.com/forums/showt ... ight=calfo Mine won't extend the full width, rather it will be 32" wide and centered. The holes I drill will be a few inches down from the rim on the backside - probably 4 holes (1" bulkhead on each one). I may just order some more bits so I can put two 2" bulkheads. Ordered the glass yesterday - couldn't get pure black without ordering an entire 4x8' sheet, so had to go with a dark tinted glass. Overflow size will be 32"W x 6"H x 4" D.