Cerges' style reactor on a by-pass manifold
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Old 01-21-2013, 05:29 PM   #1
eatfood
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Cerges' style reactor on a by-pass manifold


Cerges' style reactor on a by-pass manifold.

This is my modification to a diy reactor design that has been out there for a little while now. I can "dial" in the flow rate through my reactor so the co2 is being dissolved correctly. My fx5 has a lot of flow for one of these reactors and would just push the bubbles through, not to mention the head pressure reduction on the filter output. So the by-pass is born (probably done many times by others). The idea is I can close off the ball valve some on the main line between the in and out lines from the reactor so enough back pressure is created to cause the water to flow through the reactor while still allowing flow through the main line. the ball valves on the reactor lines are always open all the way unless i want to take the reactor housing apart for maintenance.



I plumbed this all up this weekend and my bypass works like a charm. I haven't really played with the co2 yet to see how much I need to choke it back to get the proper flow rates yet. If I turn it all the way on to reactor I lose about 1/2 of my flow and I am worried about backpressure on my fx5. I am assuming I can get away with only maybe 1/4" turn on my manifold, so that 3/4 is just going straight through and maybe 100 gph through the reactor (creating an overall 1/8 to 1/4 reduction of flow from my fx5). I guess I will have to see how much flow it takes to dissolve 1-2 bps of co2. Has anyone here ever put an inline filter / heater / reactor on their fx5? should I be worried about motor life reduction or a leaky filter from backpressure?
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Old 01-21-2013, 10:24 PM   #2
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so to simplify - do you think a 25% flow reduction on my fx5 is going to cause problems?
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Old 01-22-2013, 02:53 AM   #3
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Sort of a one sided conversation, but I wanted to update that I have full flow and water is ripping through the reactor. I figured out that if I close it about 30% the flow at my return (pointed at the surface so I can see the ripple) stays the same and I can see the bubbles spinning around like crazy at the top of the reactor - woo hoo
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Old 01-22-2013, 03:13 AM   #4
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nice to hear everything work out. nice mod and very clean plumbing. i need to make one.. i have the 20" housing that don't fit under the tank
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Old 01-25-2013, 04:45 PM   #5
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Looks like you did a neat job on that.
I suppose the other thing you could have done would be to split the return, and run two reactors.
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Old 01-26-2013, 12:08 AM   #6
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yeah I wanted the bypass so I could dial in the flow rate through the reactor - the zero loss in flow rate was just a bonus. I mean I was hoping that would happen, but no way to tell before lol.
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Old 03-13-2014, 04:03 PM   #7
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I'm looking to build one of these myself, and it seems very simple. I really like the simplicity of this design but I don't see where the co2 is placed to go into the unit? Maybe I'm missing something and not seeing it in the build.
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Old 03-13-2014, 07:23 PM   #8
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Quote:
Originally Posted by simplefin View Post
I'm looking to build one of these myself, and it seems very simple. I really like the simplicity of this design but I don't see where the co2 is placed to go into the unit? Maybe I'm missing something and not seeing it in the build.
http://www.plantedtank.net/forums/sh...d.php?t=110100

Read through this. You can use a t-fitting to inject co2 into the inlet hose of the reactor. This is probably the safest and easiest way to do it.
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