Someone correct me if I'm wrong, but I believe the reason you can't uses mirrors is because it will create hot spots. Similar to using a magnifying glass and the sun 
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28g Nano Cube drilled with 13g sump in stock stand. Vertex IN80 Skimmer, Phosban 150 Reactor, Apex Controller, DIY LED with stock hood, dimmable
Established March 2006
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