Refugium?

Mine is 6 inches....but that is only because the bed in the main tank is 2 inches. No idea if this is doing any good or not. I'm interested in other people's opinions as well.
 
I basically have the same situation as Linda. 2-3" in the main tank, 6" in the fuge, and I don't really have much idea what either one is doing.

Nate
 
Mine is 6-8" I had the extra sand and wanted to be able to give away cups of sand to people who need it.
 
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