Shut my overflows up!

[huma-huma]

As the title says, my dual overflows on my 125 are a bit loud for my liking. I need a way to quiet them down a bit. Tank is an aqueon dual overflow 125. It has the plumbing kit that comes with the tank. If youre looking down into the overflows from above, there is a lil nozzle air vent on the top of the drain tubes. I have 3 separate ideas to quiet them down but not sure which is the most effective.
1.) cut acrylic sheets to fit over the top of the overflows, simply drill out a gent hole for the drain tube to stick through.
2.) attach 6-8 inches of airline tubing to the vent nozzle, run airlining back behind tank.
3.) drill out vent nozzle to widen it, theoretically cutting down on the vacuum noise.

 

[Badambomb79]

Does it sound like sucking? Mine was doing that because the water was going down the drain pipe so I put a PVC cap on top of the PVC drain pipe so the water can only go into the holes in the sides of the PVC drain pipe solved the problem

 

[huma-huma]

Yes. Its my fault, i should have been a bit clearer, the majority of the noise is coming from the water flowing into the overflow xhambers. I can only raise the standard draintubes so far before they obstruct the glass lids. Im wondering if i take the drain tubeand drill holes into the sides, if i left the top open, would it be quieter?