08-06-2008, 02:24 PM
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I don't own a 300 gallon, but recently purchased a 120 gallon tank. Before I did, I also contemplated going with acrylic. Pound for pound, it is stronger and lighter than glass, and comes in more "exotic shapes" than glass tanks do. However, what concerned me most about acrylic was the fear of scratching it, and the difficulty cleaning it (razor blade scrapers are forbidden!). And the exotic shapes I loved so much generally do not give enough surface area at the top for proper gas exchange.
So, after doing some research and talking to people, I went with a glass, 120 gallon Oceanic Tech Tank, and so far no regrets......
Hope this helps