jestep Posted September 30, 2013 Share Posted September 30, 2013 This durso looks like it's setup correctly but constantly gurgles. Not sure if the air hole is too small or my flow is too high. Noise level doesn't change if I cover the air hole. Straight drop directly into a filter sock. No bends at all. Running on a Eheim compact 2000+ pump. Just guessing, it's probably about 400 actual GPH. Link to comment Share on other sites More sharing options...
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