So I hate going to the store again and again. But I had recently changed my skimmer pump to a realy nice one. Need less to say it was loud. So I grabbed my syringe I used for feeding. Hacked a section off with my pocket knife and connected it to the line. I could move it up and down to tune the noise and bubble size so I took note of where the best positions where. I then tossed some cotton balls In it loosely and my wife is happy now