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#1
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![]() what i did is i made it so about half a inch of the drain line is above water so the air bubbles escape right away, then the bottom half inch is in the water to make sure its still quiet, that reduced my bubbles by 80 percent.
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#2
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![]() That's the same idea as the 'T', except the T stops the water rushing into the surface from dragging more bubbles down.
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