DIY CO2 glass diffusers on eBay...help! - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 11-13-2007, 09:50 AM Thread Starter
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DIY CO2 glass diffusers on eBay...help!

Hi all, I apologize if posting eBay links is prohibited on this forum, I'm not sure if it is or not, but here goes. I've been looking around for a diffuser for a DIY jello CO2 setup, and I ran across a few of these on eBay. Are ANY of these actually decent?

http://cgi.ebay.com/Spio-VIII-Co2-di...QQcmdZViewItem

http://cgi.ebay.com/Pollen-Class-Pip...QQcmdZViewItem

http://cgi.ebay.com/Nano-Co2-diffuse...QQcmdZViewItem

http://cgi.ebay.com/ws/eBayISAPI.dll..._promot_widget

Or should I avoid those and go with something like the oil lamp chimney as in this video:

http://youtube.com/watch?v=bg7fleqhM9w

Maybe I'll just get the Hagen diffuser?

Sorry for all the noob questions.
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post #2 of 11 (permalink) Old 11-13-2007, 10:52 AM
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http://cgi.ebay.com/Rhinox-5000-Co2-...QQcmdZViewItem
I would go with that. But what size tank are you using?
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post #3 of 11 (permalink) Old 11-13-2007, 11:19 AM Thread Starter
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Actually, I've decided to connect the co2 line directly into the canister filter's inlet. But thanks!
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post #4 of 11 (permalink) Old 11-13-2007, 01:26 PM
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if you're using DIY co2... none of those difuser's will work as DIY co2 usually can't produce enough pressure, safely, to push co2 through the disc.

and just for kicks, the third on you posted doesn't attach to the aquarium wall or anything and the fourth one isn't a difuser, just a bubble counter.
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post #5 of 11 (permalink) Old 11-13-2007, 02:41 PM
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Quote:
Originally Posted by ovenmit331 View Post
if you're using DIY co2... none of those difuser's will work as DIY co2 usually can't produce enough pressure, safely, to push co2 through the disc.
Sure it can.

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post #6 of 11 (permalink) Old 11-13-2007, 03:17 PM
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Sure it can.
really? everything i've read (which admittedly isn't near everything ) said this wouldn't work.
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post #7 of 11 (permalink) Old 11-13-2007, 04:01 PM
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The one in the third link does come with a suction cup to attach to the wall of an aquarium and can be used with DYI. It will take anywhere from 1-12 hours for there to be enough pressure to work.
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post #8 of 11 (permalink) Old 11-13-2007, 06:32 PM
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The one in the third link does come with a suction cup to attach to the wall of an aquarium and can be used with DYI. It will take anywhere from 1-12 hours for there to be enough pressure to work.
yep, missed that it had a suction cup. from the initial picture it doesn't seem that way.

and i wonder what the pressure buildup in that bottle is.

anyone use Nalgene bottles? those things are indestructible. hmmm... i'm concocting a science experiment in my head... this could be dangerous...
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post #9 of 11 (permalink) Old 11-13-2007, 07:04 PM
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The bottle I initially used was a Nutrafin DYI before I switched to pressurized. The walls on it are pretty thick so no worries about it bursting.
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post #10 of 11 (permalink) Old 11-13-2007, 07:14 PM
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I have used a R2K & R5k for diy injecting and never had any issues with failure to provide pressure to penetrate the ceramic disk. Leaks, yes but that was back in my earlier days of Diy'n.

I'm not sure how well your canister will work with the bubble getting pumped in; someone who has experience with this will have to chime in on this. However if you choose to go with someting in the tank I suggest a Coralife limewood to diffuse Co2, if this is not an option for you then a Rhinox 5000 works well also.


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post #11 of 11 (permalink) Old 11-13-2007, 09:33 PM
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I use a nano diffuser with DIY CO2 using gatorade bottles. I have a second bottle as gas separate to get rid of the slime DIY CO2 produces.


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