CO2 not bubbling very much/illregularly - The Planted Tank Forum
 
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post #1 of 13 (permalink) Old 10-04-2005, 02:06 PM Thread Starter
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CO2 not bubbling very much/illregularly

Ok so yesterday i set up a yeast/sugar co2 reactor and after a few hours of letting it sit and do its thing i started to get some bubbles. however they arent coming out very quickly or often. it seems to be working cause i can watch the gas move down the tubing in the water. when it gets to the end of the airline it just sits there for a couple seconds then a few ( usually 2-3 ) bubbles come out and it will not bubble for a couple more seconds. then a ew more will come out. so i know its working in part just doesnt seem to be as much as i was expecting. i guess its better then nothing though.

bascially can anyone explain why this is happeneing.

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post #2 of 13 (permalink) Old 10-04-2005, 04:10 PM
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In my experience this happens when starting up a new batch. It will be more constant when the pressure builds up in the bottle.
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post #3 of 13 (permalink) Old 10-04-2005, 04:28 PM
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Do you have anything on the end of the tubing, like an airstone?
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post #4 of 13 (permalink) Old 10-04-2005, 05:05 PM Thread Starter
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no its open ended into the tank.

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post #5 of 13 (permalink) Old 10-04-2005, 05:33 PM
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I think it is normal. You will get varying output from a yeast sugar generator.
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post #6 of 13 (permalink) Old 10-04-2005, 06:52 PM
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Try putting a small airstone on the end of the tubing for better results. I use a small airstone made of lava rock and I get excellent results.
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post #7 of 13 (permalink) Old 10-04-2005, 07:01 PM
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In my experience this happens if there is too much airspace in the bottle, the tubing is too long, a bad check valve is used, or something blocks the open end of the tubing.

The air in the bottle is compressed until the resistance in the tubing is overcome, and a few bubbles exit.

Fill up your bottle, keep the tubing as short as possible, make sure there are no kinks in it. Don't use an airstone, unless you need smaller bubbles. With DIY CO2 airstones can block over time. Pressure builds up = not a good thing.


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post #8 of 13 (permalink) Old 10-04-2005, 07:03 PM
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Do you have any kind of diffuser or anything?
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post #9 of 13 (permalink) Old 10-04-2005, 09:32 PM Thread Starter
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o i havent made a diffuser yet. planning on it though. i just needed the c02 in the tank for the time being. the tube being long might be a problem. it makes a small loop before it goes into the tank so i might try to un-twist it. that is also what i thought could be a problem. but so far the bubbles go to the surface..hang around for a little bit, get small and then pop so they are disloving some into the water. w00t.

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post #10 of 13 (permalink) Old 10-04-2005, 10:46 PM
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well you can always stick the hose near the intake of your filter. It will suck the co2 and disperse it in the tank. The filter acts as a reactor/ diffuser.


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post #11 of 13 (permalink) Old 10-04-2005, 11:26 PM
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the bubbles go to the surface..hang around for a little bit, get small and then pop so they are disloving some into the water. w00t.
You'll be losing most of your co2 if it just floats up to the top of the tank. Try letting it go into a filter or make one of these: http://www.buckmanshome.com/reactor.html

You can experiment with your sugar/yeat mixture if you want to try and get more bubbles.

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post #12 of 13 (permalink) Old 10-05-2005, 02:31 AM Thread Starter
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yeah i will be riggin up something in the next few days to better diffuse it in to the water. i would sick it in the filter but the intake might be kinda out of reach of the bottle.

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post #13 of 13 (permalink) Old 10-05-2005, 04:44 AM
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There are lots of cheap ways to rig up a diffuser. You can buy a Hagen ladder. or you can buy a glass diffuser. They cost less than 15 bucks.

Once you get one of these things going- its going to aid with co2 defusal.

Also check for leaks. Make sure you arnt loosing your co2 pressure.


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