DIY reactor size - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 01-24-2010, 11:51 PM Thread Starter
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DIY reactor size

Planning on building a Rex style reactor. My question is what is the max length and diameter that can be used?
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post #2 of 8 (permalink) Old 01-25-2010, 01:36 AM
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This is an extremely blanket question. Variables involved:

What kind of filter is running it? What is the flow rate on the filter? What else is running inline?


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post #3 of 8 (permalink) Old 01-25-2010, 02:15 AM Thread Starter
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Fluval 404 with nothing else inline..
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post #4 of 8 (permalink) Old 01-25-2010, 08:31 PM
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Not sure about the maximum size but bigger is usually better. That being said, I have a 16 inch reactor made of 2 inch PVC connected to a 404 on my 75 and it works very well.
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post #5 of 8 (permalink) Old 01-28-2010, 12:44 AM
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Yuo should be able to get a good idea from the links below. Any questions, just ask......DC
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post #6 of 8 (permalink) Old 01-28-2010, 01:28 AM
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The length is more important then the width. The water is pushing down on the bubble of CO2. If you give too wide of a tube the CO2 will just reroute around the incoming water flow. The length give more dwell time and will reduce your chances of bubbles coming out of the output into your tank. I used 1.5" but my reactors almost 30" long. This is hooked up to the output of a XP3. You should be good with 2", but I wouldn't go any shorter then 24" total length.
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post #7 of 8 (permalink) Old 01-28-2010, 02:27 AM Thread Starter
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The tank that I am putting together is a 75 acrylic black back. I can make it 2" x 36". So I am assuming that the water flows from top to bottom?
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post #8 of 8 (permalink) Old 01-28-2010, 02:31 AM
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Yep, top to bottom. Output from the filter to the input of the reactor then at the output of the reactor to the output into the tank.
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