Making a refugium

[AC33]

There is a really cool idea I saw for a good refugium I saw on reef videos.
Click the first video on the top. It's called 'sump concept".

http://www.reefvideos.com/reefshowcase_04_content.html

But you dont really need any of that, A screw in PC bulb from home depot and some chateo with lots of flow in the fuge is really all you need if you want good nutrient export from your fuge.