CO2 Diffusion-Will it work well - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 09-02-2013, 12:09 AM Thread Starter
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CO2 Diffusion-Will it work well

I was about to order a basic co2 diffuser today but was looking at some other threads and had an idea. Instead of spending money on an inline junction for my canister could I just put an airline fitting on my spray bar and inject my CO2 that way? I would install a bubble counter inline to make sure my yeast is still producing CO2.

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post #2 of 6 (permalink) Old 09-02-2013, 12:42 AM
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Never tried that, it might work if the bubbles are small enough. The problem is when large bubbles of co2 rise to the tank's surface, you lose all the co2 that way.

You could try it and see, if the co2 bubbles are willing to travel with the flow down into the tank. Contact time with the water is what you're after, so strategic positioning of the spray bar might help with that

When I ran diy co2 I got the best results running the co2 into a powerhead with a simple diy needle wheel mod. It also provided a little extra flow and worked really well overall

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post #3 of 6 (permalink) Old 09-02-2013, 12:55 AM Thread Starter
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Ok. Thanks. Trying to avoid a power head. I don't want any extra electrical draw(no matter how small) and I have enough flow already. I do point my spray bar angled towards the opposite middle of tank, but I think the bubbles are too big.
Thanks again.

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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post #4 of 6 (permalink) Old 09-02-2013, 01:41 AM
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hmm.....have you considered a rg reactor or maybe cerge's? I don't see why they wouldn't work with diy co2.

rg reactor you could build for about $15, and cerge's ~$40. Both work great, nearly complete co2 dissolution, no "bubble mist", neither require additional electricity and don't add any in-tank equipment.

The downside is that they could cut your flow down, though I didn't find it to significantly change mine

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post #5 of 6 (permalink) Old 09-02-2013, 05:47 AM
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Quote:
Originally Posted by norbot View Post
hmm.....have you considered a rg (rex grigg) reactor or maybe cerge's?
If you're already running a canister, either of these filters will provide excellent CO2 diffusion at minimal cost.
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post #6 of 6 (permalink) Old 09-02-2013, 11:29 AM Thread Starter
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Ok. Thanks for the clarification. I saw the rg reactor in another thread describing co2 diffusion methods but from my understanding though it requires another pump of some sort, but if it can be run inline with my canister that could work too.
Thanks again.

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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