Wow, I never really put much thought into PVC structures, or seeing pics of the neat cave work you can do!
There will definitely be pvc caves in my next tank! 
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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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