Since my reef tank is in my living room, the overflow is a bit loud. 90 gallon with a corner overflow. After I upgraded the return pump, now running a DC pump with about 975gph return. My siphon break has a smaller piece of airline tubing to act as a reducer so water is not gushing out and spraying everywhere. However, where my return comes out of the overflow, there is a 1/2" gap where water is flowing through and a higher rate. It's like a small waterfall. Any suggestions on how to quiet the overflow? I can upload a picture this evening if it helps.