Co2 reactor questions diy - Page 2 - The Planted Tank Forum

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post #16 of 37 (permalink) Old 05-02-2013, 02:35 AM Thread Starter
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Co2 reactor questions diy

I will have to squeeze it into the back corner... But what so you guys think of this design. Any critiques before I glue it up?
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post #17 of 37 (permalink) Old 05-02-2013, 04:17 AM Thread Starter
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post #18 of 37 (permalink) Old 05-02-2013, 04:24 AM
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I like #2 just because it looks cleaner. They look like the would function similarly.
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post #19 of 37 (permalink) Old 05-02-2013, 04:27 AM Thread Starter
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My thoughts with #2 is it would have an internal circular motion rather then top down... hopefully spiral down ..I could even 45 the integral half of the grey plug to help force a spril motion.. maybe better diffusion? Also it has an access lid for cleaning (maybe one day)...

The next question is.. if i do number 2.. where would be the optimal place to co2 barb.

What do you think?
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post #20 of 37 (permalink) Old 05-02-2013, 04:35 AM
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Co2 reactor questions diy

I mentioned this in some other post. Anyways, here's my design.



I like what I did since it requires no drilling or glueing of any plastic or brass fitting.
~Cristian
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post #21 of 37 (permalink) Old 05-02-2013, 04:39 AM Thread Starter
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That is nice and simple! I like your design..

My problem is i only have 23" of height to work with if i want it hidden in my cabinet.


The possible issue i see with #2 is wouldn't i potentially get an air bubble trapped at the top.
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post #22 of 37 (permalink) Old 05-02-2013, 04:50 AM
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Co2 reactor questions diy

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That is nice and simple! I like your design..

My problem is i only have 23" of height to work with if i want it hidden in my cabinet.


The possible issue i see with #2 is wouldn't i potentially get an air bubble trapped at the top.
Option 1...add a T so you can attach the brass fitting.

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post #23 of 37 (permalink) Old 05-02-2013, 04:54 AM Thread Starter
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Do I need a T or just drill and thread it in?

Secondly.. is it better to add it at the top.. or at the bottom so it flows up into the stream of bubbles.. ?


Do i need to worry about accessing/cleaning it at any point in the future or is that not really an issue?
Does yours have bio balls or anything in it or is it 100% open?
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post #24 of 37 (permalink) Old 05-02-2013, 05:12 AM
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Co2 reactor questions diy

Mine does not have any bio balls. The length of the reactor and the working bubble rate is not fast enough to let any gas escape.

The inlet of the reactor is attached to the outlet of the filter, so I don't think I have to worry too much about dirt accumulating inside the reactor.

If I notice a decrease in flow it could be my filter or the co2 reactor. If its my reactor then I could easily detach the fittings and rinse it.

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post #25 of 37 (permalink) Old 05-02-2013, 05:22 AM Thread Starter
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Thanks for the clarification.. I could detach at the other side of the 90 degrees elbows on mine for a rise.. if i ever needed to.

So you think Injecting CO2 at the top (on the reducer) is best? vs having it mid to lower and letting it bubblee up?

The FX5 burps it self every 24 hours or so.. so hopefully no co2 makes it in for the burping cycle.. (hopefully it happens at night when its off!)

I have the flow turned down to 80%.. so a reduction is no bit deal as i could bump it back up again.
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post #26 of 37 (permalink) Old 05-02-2013, 05:35 AM
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Co2 reactor questions diy

I believe most reactors have the inlet for co2 somewhere in the middle...mine is all the way up there and I have no problem getting my drop checker at a lime green color. I'd be interested in other people's opinion too.
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post #27 of 37 (permalink) Old 05-02-2013, 02:53 PM
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Quote:
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I believe most reactors have the inlet for co2 somewhere in the middle...mine is all the way up there and I have no problem getting my drop checker at a lime green color. I'd be interested in other people's opinion too.
having it at the inlet allows the flow to break it up into smalle rbubbles.
smaller bubbles means more surface area, and that equates to faster dissolving.

i personally like design one, as with smoother bends. head loss will be decreased. since reactors add head pressure, and that reduces flow, being able to save head pressure any way you can will limit how much flow is reduced by your reactor

if this was just a powerhead, i'd feel much different as those are better rated for pressure increase than a cannister
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post #28 of 37 (permalink) Old 05-02-2013, 05:24 PM Thread Starter
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post #29 of 37 (permalink) Old 05-02-2013, 06:27 PM
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Does my CO2 line need a check valve?
Always.
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post #30 of 37 (permalink) Old 05-02-2013, 06:37 PM Thread Starter
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I finished building my reactor.. the only issue is when the FX5 "burps" it self it dumps a bunch of bubble into the reactor.

So far with the CO2 is off and there has been no water feeding back into the line.. but i will put on a check valve anyways for piece of mind

I can see a bunch of air bubbles coming out of the outtake.. I'm sure they will dissipate over time.. I havent turned the CO2 on yet as i'm waiting for the air bubbles to disappear first

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