If you have a canister do you need a reactor?

lipadj46

Junior Poster
Apr 6, 2011
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I was going to build a clear acrylic reactor to put inline on my canister output but I was wondering if it would be easier and more efficient just to drill a hole in the side of my canister and inject the CO2 directly? I figure the bubbles would have to bubble up past my media and that would give them plenty of time to dissolve. Any thoughts or should I stick with an inline reactor?
 

nero82

Junior Poster
Mar 16, 2011
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Why put a hole in your canister filter? Just put the co2 outlet into the canister intake tube. The bubbles still have to go through all the media. Only problem is you can get a bit of burping, and some people say the co2 can perish the seals on your filter a bit faster. Some people do this with no troubles however.
 

dutchy

Plant Guru Team
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Jul 6, 2009
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The Co2 will not dissolve fast but stick in the media. This will give a lot of uncomfortable noise coming form the filter as it burps up big bubbles of CO2.
 

mathman

Guru Class Expert
Mar 8, 2011
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I Have a Co2 reactor attached to the output of my eheim filter and have no problems whatsoever. The flow rate is slower but I believe I have total Co2 diffusion.
 

lipadj46

Junior Poster
Apr 6, 2011
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I'm going to give one of those Up Aqua inline atomizers a try for $20 shipped why not. I will also build a reactor as I have most of the parts laying around.
 

scottward

Guru Class Expert
Oct 26, 2007
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I was going to build a clear acrylic reactor to put inline on my canister output but I was wondering if it would be easier and more efficient just to drill a hole in the side of my canister and inject the CO2 directly?

Don't do it. As your filter clogs, your flow rate will be effected, which will in turn cause fluctuation of your CO2 levels (= algae, poor growth).

Set up a dedicated CO2 system.

If your canister filter plays up you won't have a running filter or CO2 system.

Scott.