anyone used one of these diffusers?

never tried it but it sounds pretty interesting. id like to know if it works too.
 
How will you know if your DIY canister is still making CO2 if you can't see any bubbles?
 
I use the Amano-type glass diffusors only, but would be interested to see a review on this product.
 
I'm not certain, but I'm thinking a membrane diffusor would need presurized co2 to work properly. That is to say it would create back pressure as gas pushes its way through the membrane. If you try it with a DIY set up you may want to watch your bottles and tubes closely.
 
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