My DIY CO2 Reactor - The Planted Tank Forum
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post #1 of 152 (permalink) Old 05-08-2008, 03:55 AM Thread Starter
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My DIY CO2 Reactor

Well I finally built my very first CO2 reactor after having used a diffuser for the last year or so. I have to say that I was impressed when I hooked it up and it actually worked. It would be wrong if I did not thank Tom Barr and Rex Grigg for all their great information that I found posted on numerous web sites. I basically just combined the elements I liked from each of their reactors and made my own version. This is what I did.

First I gathered all the parts including:

1- 2" reducing T with a 1/2" threaded side port
1- 2" Coupling slip
1- 2" Plug
1- 2" Reducer Bushing with a 1/2" threaded port
1- 12" Clear PVC pipe
2- 12" long 3/16" tubing
2- 1/2" hose barbs


This is what all the parts look like laid out waiting to be assembled:


[/IMG]



The first thing I did was drill two 3/16" holes in the top of the reducer bushing like so:


[/IMG]


Then I inserted a 12" long 3/16" tube in one hole for the CO2 line to attach to and a 3" long tube that I will later attach an extra piece of CO2 tubing to with a valve so that I can release any built up gas at the top of the reactor:


[/IMG]


After assembling all the pieces, this is what the finished product looks like. In this picture you can see the extra piece of CO2 tubing I attached to the 3" interior tube. It has a drip irrigation valve attached to the top which I will use to release any back pressure that builds up. Luckily the reactor has worked pretty efficiently and most of the CO2 injected is being dissolved. I have not had to release any trapped gas as of yet. :


[/IMG]


This is the reactor attached to my filter and CO2 System. Using clear PVC pipe allows you to use the 3/16" tube as a bubble counter so you know exactly how much CO2 is entering the reactor:

[/IMG]

Well thats my reactor. Hope it helps anyone trying to build their own. Good Luck.

Last edited by mcd19; 07-11-2008 at 02:26 AM.
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post #2 of 152 (permalink) Old 05-08-2008, 04:04 AM
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did you forget the picture?

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post #3 of 152 (permalink) Old 05-08-2008, 07:04 AM Thread Starter
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did you forget the picture?

Sorry I was working on thread and posted it by mistake before I was finished.
Here it is.


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post #4 of 152 (permalink) Old 05-08-2008, 07:09 AM
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well there's that edit button


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post #5 of 152 (permalink) Old 05-08-2008, 05:52 PM
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Is that clear pvc schedule 40?


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post #6 of 152 (permalink) Old 05-08-2008, 08:51 PM Thread Starter
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Quote:
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Is that clear pvc schedule 40?

Yes it is. It fits regular PVC fittings and you can use regular cement and primer.


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post #7 of 152 (permalink) Old 05-08-2008, 10:03 PM
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Yes it is. It fits regular PVC fittings and you can use regular cement and primer.
That's great! Now where can I find some?

Btw,that is a nice looking reactor that you built.Very clean...


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post #8 of 152 (permalink) Old 05-08-2008, 10:15 PM
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looks dope. worth the extra cost for the clear pvc imo.
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post #9 of 152 (permalink) Old 05-08-2008, 10:17 PM
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That's great! Now where can I find some?

Btw,that is a nice looking reactor that you built.Very clean...
http://www.aquaticeco.com/subcategor...Clear-PVC-Pipe
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post #10 of 152 (permalink) Old 05-08-2008, 10:18 PM Thread Starter
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I bought mine from here:http://www.aquaticeco.com/subcategor...Clear-PVC-Pipe This company sells the clear PVC by the foot and its hard to find a place that will sell it buy the foot. Most companies want you to purchase numerous feet of the stuff. This is also a great company to buy aquarium related supplies in general.


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post #11 of 152 (permalink) Old 05-08-2008, 10:26 PM
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Thanks a lot,guys!
Bookmarked.


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post #12 of 152 (permalink) Old 07-02-2008, 08:54 PM
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haha, was looking for this thread, this one should be a sticky
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post #13 of 152 (permalink) Old 07-02-2008, 09:14 PM
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where did you get the 3/16 rigid tubing?
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post #14 of 152 (permalink) Old 07-04-2008, 04:41 AM
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Petco sells rigid tubing but I managed to score some more from a local fish store.

I like how the reactor is a hybrid between Tom Barr's and Rex Grigg's, it combines the best features of both. I was wondering where you purchased the reducing T. I couldn't find one so I had to resort to using a 2" T and another reducing bushing.
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post #15 of 152 (permalink) Old 07-04-2008, 07:46 PM
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If you could attack some kind on diffuser on the end of the longer tube, you could probably get better diffusion

-Chris

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