Help Deciding Diffuser

Zikofski

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Now i am pretty sure i know why you shouldn't get the 
 
UP Inline Twin Super CO2 Atomizer 16/22mm
 
and get the

UP Inline Large Super CO2 Atomizer 16/22mm (D-519-16-L)

instead, as the Twin, and in fact the small tube is pointless compared to the Large.

now i am posting this up so hopefully someone can prove me wrong, so to speak to challenge my theory behind what i think so here is my theory.

Co2 you want maximum Dissolution with little flow reduction, when it comes to inline diffusers, now for me this blows the small tubed one out as the water flowing up the pipe goes into the large chamber then pushed through the hole at the other end, this expanding in the chamber will reduce flow rate right? so for me thats a no no.

with the Large which is the one i am inclined to get has the large tube so the water flows up the pipe into the large tube which is the same size as the pipe and then up and out so no change in size of hole so no pressure or flow lost right?

this also the case with the Twin as it has both Large and Small Ceramic tubes

But this brings me to the Co2 it self, what is the point of the Twin, how can, Co2 diffuse through a small Ceramic tube into effectively air, not water, to then haft to diffuse through the larger tube now into water? please can someone see how that is beneficial than to co2 just going through the one ceramic, it cant make the bubbles any bigger or smaller really?

again i am posting this to hopefully someone prove my theory wrong? or tell me i am right? to me the Twin is a wast of money and time and just dose not make sense
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thank you for reading and looking forward to what you all think about this

Ziko

EDIT: to help i will add a link to the diffusers in question
 
Small: http://www.tankscape.co.uk/up-aqua/UP-Inline-Small-Super-CO2-Atomizer-16-22mm-(D-519-16-S)?page=2
Large: http://www.tankscape.co.uk/up-aqua/UP-Inline-Large-Super-CO2-Atomizer-16-22mm-(D-519-16-L)?page=2
Twin: http://www.tankscape.co.uk/up-aqua/UP-Inline-Twin-Super-CO2-Atomizer-16-22mm-(D-519-16-T)?page=2
 
I can honestly say that I can't see the point of the twin.
 
Me too, the single has near 100% diffusion.
 

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