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A pipe filled with water and nothing else, makes no noise (or very little, and it's not the gurgling everyone talks about), so does'nt this equate to the noise created in a durso being trapped air also?
The setup I desribed before was not a durso, just a regular bulhead in an OFB.
As for anything clogging, you need to make precations for that before it gets to the plumbing no matter what type of steup you have. I have setup many tanks this way and none have overflowed due to something clogging the valve, but I do see your point.
Could you explain how the Durso actually prevent's the noise associated with the drains? I don't think I've ever got the grasp of how they work to be honest with you.
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