DIY CO2 diffuser and filter - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 10-22-2013, 11:26 PM Thread Starter
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DIY CO2 diffuser and filter

So I really didnt want to build an inline reactor because I can't turn my diy co2 off and I don't want to use a ballon. So I have been using my Powerhead but got to thinking to invert it and have the flow of the pump pulling down as the co2 rises. Took ideas from Tom Barr's and the Rex Griggs reactor but this one I have on a timer to turn on two hours before lights on and off with the lights. Don't have any long term results yet but I think I should lengthen the vertical section of tube to lengthen the amount of time co2 reacts. Right now the pump is still a little strong but a longer tube should help that. I used a double sponge setup as the reactor. I like having two filters and didn't want to use as much space as the Tom Barr reactor but I wanted to be able to turn it off. Any other ideas to increase efficiency. Maybe put co2 inlet higher up into the sponges?
I have this setup in my tank but still dealing with a lot of tannins so actual pictures are worthless.
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If in doubt, add more plants!

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post #2 of 3 (permalink) Old 10-23-2013, 12:14 AM
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I got an idea. Put the powerhead in your tank upside down, with the intake pointing up. Have your co2 output inside whatever strainer you're using on the powerhead. Run the powerhead with your light timer. The co2 will get all misted by the powerhead when the lights are on and just big bubbles not diffusing that much when the lights and powerhead are off.
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post #3 of 3 (permalink) Old 10-23-2013, 12:40 AM Thread Starter
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That's exactly what I am doing, but the co2 stays suspended awhile before hitting the impeller. Just using the impeller was not that effective in my opinion. U needed a reactor help diffuse the bubbles before they entered the power head.

If in doubt, add more plants!

My not-enough-plants-but-not-enough-space-to-put-anymore-so-will-start-going-up-box-of-water.

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