My New rex style co2 Diffuser - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 12-30-2008, 04:32 AM Thread Starter
 
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My New rex style co2 Diffuser

Decided to modify the rex reactor with tubing from the local home depot. I used some acrylic tube with pvc end pieces to connect it inline. Dissolved a 2 inch pocket of co2 in a few minutes time. Here are some pics.





After the co2 kicks on ill report back on the efficiency.

Last edited by ccLansman; 12-30-2008 at 05:49 PM.
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post #2 of 10 (permalink) Old 12-30-2008, 05:05 AM
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Whats inside of it for disturbance?


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post #3 of 10 (permalink) Old 12-30-2008, 02:50 PM Thread Starter
 
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I just use the return from my eheim 2026 and it seems to get the job done, no media of any kind. I had a 13" reactor but bubbles would start leaking out about an hour into the day. With this one only a few micro sized bubbles come out and not until the end of the day. I did noticed way more pearling about an hour after lights on.
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post #4 of 10 (permalink) Old 12-30-2008, 03:14 PM
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Interesting.... I'll be wondering how that works. Please keep this thread updated!
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post #5 of 10 (permalink) Old 12-30-2008, 05:19 PM
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i don't really see what's all that different other than the fact that it seems as though the main body is a differing material than standard PVC pipe. can you please fill me in on what i'm missing here...
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post #6 of 10 (permalink) Old 12-30-2008, 05:42 PM Thread Starter
 
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Well its not night and day different, i guess i could have worded the title differently. I meant it was new for me

You are correct, its not pvc and i chose straight barbs for my connectors. I also simply added a barbed connector for the co2 injection point.

I just wanted a clear reactor so i could see a bit of the action, also its cheap compared to the clear pvc which is difficult to get. All home depot stores should have the parts i used, total cost was $12 + $4 for the 1/2 hose barbs that i already had. You could do it for $12 with the barbs if you went with all plastic ones.

One bonus is the fact that the tubing is not super rigid so you have a lot more flexibility in placement. As well as eliminate the need for the 90degree barbs that add head room on pump, with the bent tube i can go straight in.
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post #7 of 10 (permalink) Old 12-30-2008, 05:44 PM
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The big difference is the main body of the reactor. I still can't tell just what it is, but it appears to be a piece of semi-transparent hose. And, the diameter seems small. Tell us some more, and what size tank it is for.

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post #8 of 10 (permalink) Old 12-30-2008, 05:47 PM Thread Starter
 
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The inside diameter is 1-1/2, the tubing was labeled high pressure tubing. Its two layers of transparent high grade rubber with pvc thread woven into it. I would have liked no threads but the only one without them was only 1/2 inside diameter. The tubing was on the plumbing isle at home depot with the rest of the connectors and various tubes.

Im using it on my 60gal. It shredded a two inch pocked of co2 in a matter of minutes. So i would have to say so far it appears extremely efficient. I will keep a closer eye on it today and see if can post any more results.

edit:: changed the title, so there is less confusion.
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post #9 of 10 (permalink) Old 12-30-2008, 08:42 PM
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This is still a simple device, but you made it even more cheaply. I haven't seen that size hose before, but I would think it would work very well. And, it is certainly strong enough for the 2 psi or so pressure we deal with.

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post #10 of 10 (permalink) Old 12-30-2008, 09:39 PM
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I use that same type of hose, but in 1 inch, when I plumbed my 135. It's relatively cheap, flexible, easy to work with, durable and available at most Home Depots. I did a similar thing except I used a T to push the CO2 into my return before my UV (Tom Barr has a thread on this). I get good saturation plus misting of small bubbles in my tank. I can drop my CO2 a full point in 45 minutes with a bps of 4-5.

John



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