I'm running a custom tank with 3/8" of glass that is 36x20x20 an i dont have a slight bow in there. I have a friend that has been making tanks for years and he tells em that on a 3/8 anything over 20 " you will need a center brace.
mike
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180 starfire front, LPS, millipora
Doesn't matter how much you have been reading until you take the plunge.
You don't know as much as you think.
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