DIY CO2 Injection - Looking for Opinions - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 08-28-2011, 10:45 PM Thread Starter
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DIY CO2 Injection - Looking for Opinions

So, I started my 20L a few months back, got a Hagen setup. About a month later, I upgraded the little Hagen canister to two gallon juice jugs, so I don't have a couple of days of no CO2. I had a couple of days with none and the outburst of algae got me interested in this kind of setup.

Anyway, after see bubbles escaping the ladder at a decent size, I decided to make a reactor. Here's my attempt. Seems to be good so far, not seeing any bubbles escaping, and in the few hours it's been running, I've seen a significant increase in pearling. I know the size is a bummer, but I can justify it for the time being to see the growth increase. Any comments? I can go through the making of it if anyone is interested.

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post #2 of 4 (permalink) Old 08-28-2011, 11:55 PM
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I can't tell what kind of reactor that is, so I'm interested in more details.

Hoppy
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post #3 of 4 (permalink) Old 08-29-2011, 12:24 AM Thread Starter
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Not sure what it would reactor class it would fall into, but it's basically the top half of a mountain dew bottle (I'm a junkie for the stuff) with a ~140 GPH pump mounted to the cap pushing water down into the bottle section. (The image is sideways, just realized. Sorry about that.) The airline is just in front of the output of the pump. The end of the bottle section has some floss media zip tied to it to minimize direct flow downward and to catch any bubbles that might be able to catch enough flow and be pushed out the bottom.

The theory is that the direct flow from the pump output, about 2cm across, pushes the bubbles coming out of the airline down, the bubbles can then escape the flow by moving radially outward, as the bottle becomes wider, and buoyancy will bring them back up to the output of the pump, where they start the trip all over again.

I've seen devices like this, but I can't remember what they were called or where I saw them. It seems to be much more efficient than the Hagen Ladder I was using, and is pretty interesting to watch with all the bubbles .
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post #4 of 4 (permalink) Old 08-29-2011, 02:13 AM
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That is a reactor type that many people make in different forms. If you don't mind it being so visible in the tank it should work very well.

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