need a recommendation for a CO2 diffuser

Hopefully I'm not taking over this tread but can you tell me how to make a DIY CO2 dissuser?
Do a search for "diffuser" in the Freshwater DIY section. Lots of good info can be found rather easily there. How you build one depends on what supplies you have on hand or are willing to buy. Not to mention, which type would look more pleasing to you in your tank (or outside if choosing an inline).
 
Pros - works well in smaller aquariums
Cons - Will create an uneven distribution in the tank.... the Co2 will be higher near the diffuser. Also, some bubbles will still come out of the diffuser and float to the top, so you won't get 100% diffusion.

I made the one on Rexx's site, and I am very happy with it.
 
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