I tried both Durso and Stockman's for my standpipe and both were loud. Then finally, I just took a pipe and drilled a whole bunch of holes randomly near the top of it and used that as the standpipe and it was dead silent. Its super simple and its been working for months. I don't know why no one else does it and what its drawbacks are. My flow is about 300GPH.
I figured that it is quiet because no whirlpool is created and there is no air being sucked down the pipe. The water is sucked down at full speed at the bottom holes while the water trickles in slowly at the top few holes so there is no splashing and almost no bubbles formed. The result is a quiet overflow with almost zero bubbles coming out of the return.
Last edited by Samw; 09-07-2006 at 12:13 AM.
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