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#5
06-24-2007, 06:23 PM
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The point of the U shape stand pipe is to avoid a vortex (whirl pool)
Which will cause a lot of noise. The reason it's tall is, pipe is cheaper then glass. If you dont have water in your overflow chamber the pressure on the chamber glass is high. If you got a leak you could end up with your entire tank on the floor in a few minutes.
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______________ Tim 
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