T-reducer - Taking 9.5mm To 4mm

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nry

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Okies, some may recall me asking about getting CO2 into my external filter to use the filter as a CO2 reactor. Given I should need a fairly low bubble count to reach 30ppm with this method in comparison with the bpm I need with an in-tank diffuser I am keen to try it out. I am also as much trying to sort this to remove as much equipment as possible from inside the aquarium.

I have found thiswhich is listed for use with water-cooling a computer:

http://www.thecoolingemporium.co.uk/produc...products_id=125

It is a 12mm straight-through connector (which should fit the tubing on my external filter) with a 3rd 't' peice which is 3/8" or ~9.5mm. The CO2 line is the same size as normal airline which I believe to have a 4mm internal diameter. I am now trying to find something which will reduce the 3/8" 't' down to fit the 4mm internal of the CO2 line?

It should look something like:

12mm filter tube from tank
|
|
---------9.5mm reducer------4mm CO2 line
|
|
12mm filter tube to filter cannister

So in short the CO2 is getting pumped straight into the external filter and should get mixed, I am assuming, ~100% efficiently.
 

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