I had the same problem with mine initially. It lasts for about a day or
so. I think the issue is that the plastic is so fresh it has certain
properties when not immersed, and neeeds time to "become one" with the
eventual slime that will coat it. Basically its a matter of "greasing" the
pipeline, and just leaving it in the tank will facilitate this (just dont
mess with it, it'll start going up the ramps without stopping).


In article ,
Andrey Tarasevich wrote:
Hello

I notice that instead of going all the way up CO2 bubbles are collecting in my
new Hagen Nutrafin diffuser forming larger bubbles that just sit there all the
time. I tried forcing them out of there but eventually they reappear. Meanwhile,
I saw a working setup in my LFS and it didn't have any bubbles stuck in it. I
also read somewhere on Google that this is normal for freshly installed
diffusers and eventually this issue will go away. Did anyone experience this
problem with their Nutrafin diffusers? Will the diffuser eventually clear up?
And if it will, what's the physics of this process? I.e. what exactly is going
to change so that the diffuser will no longer trap and hold CO2 bubbles?

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Best regards,
Andrey Tarasevich



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