DIY Noise suppression

[atoll]

I haved a HOG2 and have attached a short length of airline to the air outlet at the top in an attempt to reduce noise of the bubbles/air exiting. Unfortunately this has not been completely successful as air and water are spit out of it still creating some noise. I was wondering if something along the lines of a CO2 bubble counter might be more successful in reducing noise or if anybody had any ideas for noise suppression?
A bubble counter something like this one.
http://www.ebay.co.uk/itm/Jbl-Co2-Count-Bubble-Counter-For-All-Co2-Systems-/141161382221?pt=LH_DefaultDomain_3&hash=item20dddfc14d

Most skimmers have a silencer on them which might prove successful.

[SantaMonica]

If using a tube, you should have a U on it, or just point the tubing down towards the water. I guess you could put a little muffler on it if you are sure that's where sound is coming out. Here are some more HOG tips...

http://algaescrubber.net/forums/showthread.php?3216-HOG-Scrubber%AE-tips-and-mods

[atoll]

Thanks. I will look into trying some of the things mentioned.