What size hole are you drilling and where abouts?
Here are pics of how I drilled my tank: http://www.canreef.com/vbulletin/showthread.php?t=63026
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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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