It's too loud !!!

[maron6977]

I just purchased a Aqueon 120g w/dual overflows . I was so excited to finally get something that I thought would be dead quiet but it's Not. Before I spend a bunch of money that I don't have, I thought I'd ask you guys & gals for advise.
So the setup : dual overflows w/durso drains - thru 1" corrugated hose ( THIS IS WHERE THE NOISE HAPPENS ) - into an Eshopps dual filter sock holder, on the sump .
Now I'm running a quiet one 4000 return pump - do I need more flow to fill the drain hoses ?
Or
Should I put ball valves on drain hoses just before sock holder ???
Also 1 of the drain hoses makes a curly Q to get it into the bulkhead on the sock holder.

To be honest the noise isn't too loud but water trickling thru drain hoses , I thought I'd like to eliminate the extra noise if I could .
Thanks Mark