So, how do you diffuse your CO2?

So, How do you diffuse your CO2 bubbles?

  • Air Stone

    Votes: 7 14.3%
  • Bell Glass Diffuser / Big bubble of trapped gas

    Votes: 3 6.1%
  • Bubble Ladder/ Spiral

    Votes: 8 16.3%
  • Ceramic Glass Pipe Diffuser

    Votes: 6 12.2%
  • CO2 Tablets

    Votes: 1 2.0%
  • Cotton / cigarette Filter

    Votes: 0 0.0%
  • Injection into Underwater Powerhead

    Votes: 12 24.5%
  • Injection into Filter intake tube (external canister/HOB etc..)

    Votes: 6 12.2%
  • Sparkling Spring Water

    Votes: 0 0.0%
  • Wooden Chopstick

    Votes: 3 6.1%
  • Other (Please leave a comment below)

    Votes: 10 20.4%

  • Total voters
    49

lazyNode

AC Members
Oct 26, 2006
297
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0
Sydney, Australia
I've read so many methods of diffusing CO2, I'm curious to see which method people use. I've listed all the methods I've come across. Yes, even Sparkling Spring Water! I think that was an Amano method.

I personally use a segment of wooden chopstick stuck into the end of the silicon tube, and I find it makes quite fine bubbles. I then place the output under my filter output so the bubbles get blown across the tank.

This poll applies to both pressurised and DIY.

And if you have something different please let me know!
 
I stick my airstone in my gravel underneath a big piece of driftwood. Every 10-20 secs a few big bubbles escape from under the driftwood. There are oxygen bubbles released from my plants the first week after a fresh batch of yeast (DIY Co2 generator). Considering a more efficient way to diffuse it cheaply. So this post will be helpful.
 
http://www.aquariumplants.com/product_p/pr374.htm



I use this reactor. It works great, inexpensive and can be used with pressurizd or DIY.

Blue

I made one like that for for about the same. I used a gravel vac and a rio 600 with some bio balls(not my design seen it on the net somewhere). Total cost was like $18 for rio 600 $6 gravel vac and $8 for 90 small bio balls. Also used a fuval filter sponge at the bottom. Total was like $35, works fine and its fun watchin the bio balls spin inside the tube and all the pretty bubbles :dance2:
 
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I forgot about the reactor. D'oh. That reactor looks fun - I never knew what the bio balls were for in the tube. Althought a powerhead would add another 12 watts to the electricity bill... compared to the 0 watts that my coke bottle is using.
 
I have 3 different methods :). My 55g, 29g, and 5.5g all have pressurized CO2. The 29g and 5.5g have glass diffusors with the ceramic disc (5.5g has a nano one). I have the tubing placed in the intake of a powerhead in the 55g for the time being. I had a glass diffusor for this tank, but broke it before I could use it :(. I am considering making a DIY inline reactor, but I have to buy more tubing first.

My 3g has DIY CO2 via a limewood diffusor under the HOB intake. I'm not sure how well this is working....but the plants are doing well, so it has to have some positive effect.
 
the bio balls helps chops up the bubbles. with the water pushing down and the bio balls and bubbles floating up the bubbles get chopped pretty good. im not sure on a bigger tank but on my 25 helps with circualtion also.

Hey GirlieGirl8521 wht size tank do u use for all 3 tanks and how long dose it last you?
 
Hey GirlieGirl8521 wht size tank do u use for all 3 tanks and how long dose it last you?
I have a 20lb CO2 tank. I just set it all up recently (about 1 1/2 weeks ago), so I'm not sure how long it will last. I was told it should last me around a year. :)
 
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