Just thought you might find this interesting

[nanephilim]

Its cheap:

http://www.prolighting.com/hu40mehahiba.html

[wetworx101]

My god, those are the things my work has. They are huuuuuuge. I wouldnt even dream of over a nano, as the bell is prolly over 18" wide by itself! But for a large tank refugium, like a 300gallon rubbermaid vat...hmmmmm.