Sump is really loud. How to help?

[MRCORAL]

The water coming into the sump is very loud any ideas on to quite this down? This is in my Son room I need ideas. I have a 29g L sump. I also have a ball value on the return to control flow if needed.

[gbtrain]

Is this a overflow box or a drilled tank?

[Spuds725]

And what flow are you running-- is high flow necessary.

[MRCORAL]

It is a reef ready oceanic. I just need a few idea on how to make the water coming in quite.