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#2
09-04-2008, 04:46 AM
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How tall do you want to go, and I would think that it would depend on width and length as well.
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller 180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return. 
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#3
09-04-2008, 02:28 PM
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http://www.garf.org/tank/BuildTank.asp
According to this tank calculator the tallest you should go with 1/2" is 30 inches.
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#4
09-04-2008, 03:00 PM
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it depends how you build. If you have acrylic euro-bracing at the bottom and the top of the tank, I would go up to 36. Otherwise 30 is probably safe.
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____________ If people don't die, it wouldn't make living important. And why do we fall? So we can learn to pick ourselves up.
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#5
09-04-2008, 03:52 PM
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It depends on a few things, first off as stated length for sure as well as bracing but it's not about safety with acrylic. You could build a tank 4 feet tall with 1/2" and it would easily hold but it's the bow you have to worry about. Acrylic is softer than glass and will bow and bulge more which creates distortion. I wouldn't go any bigger than 4 feet in length and 2 feet in height using 1/2". Remember Acrylic is clear you can go as thick as you want without sacrificing clarity. Although it's stronger than glass an acrylic tank should use thicker material than a glass tank.
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