[Krackenreleased]

So I just got a 95 gallon tank delivered yesterday which was installed by the local lfs. (So this is not a do it yourself...but I need to fix the problem myself). The tank is drilled with 2 holes for the drain and 2 holes for the return.
Got the tank up and running and the tank is incredibly loud. I believe the noise is coming from the water going down the drains and the water falling into the overflow.
I have attached a photo of the inside of the overflow.
Does anyone have any suggestions on what I can do to correct this problem or please ask if I need to provide more information. Please forgive me if I haven't used the correct terminology as I am very new to this.