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[URL=http://www.3reef.com/gallery/photos/diy-twin-upflow-reactors.15941/][IMG]http://www.3reef.com/data/photos/l/15/15943-1403641072-8fcb8aaf0d25fc72622dee1bd96cec3f.jpg[/IMG][/URL] [URL=http://www.3reef.com/gallery/photos/diy-twin-upflow-reactors.15941/]DIY Twin Upflow Reactors[/URL] by [URL=http://www.3reef.com/gallery/authors/pny.30831/]Pny[/URL] on 3reef Aquarium Forums
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