DIY skimmer for a 125 gal

[culinaryninja73]

I need the goods! any pics, blueprints etc would be appreciated!
I want to run a skimmer in a sump under the tank and a seperate refugium.

[dugg]

http://archive.reefcentral.com/forums/showthread.php?s=&threadid=628296

This one works great on a large tank and cost almost nothing to make.