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Unread 07/12/2016, 06:43 PM   #13
Timfish
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Join Date: Jul 2010
Location: Austin, TX
Posts: 1,985
I was comparing experiences a few years ago with a friend of mine who has managed a pet shop for over 38 years and we were guessing about a 10% failure rate at the 20 year mark with glass. They have one 200 display tank and a several 55s that were there when she started working there. But I have seen reputable tanks fail long before then. And like Srynx said the silicone would have to be seen to be judged. Certainly new air bubbles or changes in color would be reasons for concern. Algae working it's way into the joints between the glass would be keeping me up at night. Ironically, some of the cheaper tanks where the plastic trim around the top and bottom is used as a jig to hold the glass in place may hold up better as the plastic frame has to fail as well as the silicone joint to see a catastrophic spill.


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