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For an inexpensive diffuser it's rugged and it has a lot of surface area. I get some big bubbles but overall great diffusion with lots of very tiny slow rising bubbles. I replaced a cheap ceramic diffuser with this because the ceramic disc was always clogging up. So far no problem with flow in this one. Addendum. Eventually I suffered the same clogging problem with this as with the others. I've left the stars because it may be my fault for allowing it to sit in the aquarium while the co2 was not running. Don't do that. Fair warning.
Verified purchase: Yes | Condition: New
Disperses bubbles the best out of anything i tried. Bought mine for around $5.49 from overseas shipped free. You have to patiently wait for the shippig, but the wait is worth it. I would personally order 2 at that price. The lifespan on the first one was abt 2 mos. Shipping? abt 2 mos from Hong Kong i believe. I will only order one type of diffuser now.
Verified purchase: Yes | Condition: New
for $7 it performs like a $30 name brand atomizer. Highly recommended. Shipping was fairly timely also, which is not always a given from China.
Verified purchase: Yes | Condition: New
Great diffusing of CO2 with very small bubble, almost like dust. Much, much better than glass diffuser i used earlier in my 60L tank.
Verified purchase: Yes | Condition: New
By far the best defuser I have use to day. I have a couple other styles which I only keep around as spares now.
Verified purchase: Yes | Condition: New
This works great!
Verified purchase: Yes | Condition: New
I have been using the Glass CO2 diffusers for some time, and I have to say this version is so much better. And don't have to worry about braking the glass.
Verified purchase: Yes | Condition: New
Requires a lot of pressure to even bubble. Bubbles are huge.
Verified purchase: Yes | Condition: New
Totaly sealed up some way after one day
Verified purchase: Yes | Condition: New
These work very nice. Better than the glass diffusers. The bubbles are smaller..
Verified purchase: Yes | Condition: New