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DIY c02 for your aquarium

This is a discussion on DIY c02 for your aquarium within the DIY Aquarium forums, part of the TFK Resources category; --> With the check valve you should be able to blow air easily in one direction but no in the other, If it is a ...

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DIY c02 for your aquarium
Old 09-05-2011, 01:41 PM   #11
 
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With the check valve you should be able to blow air easily in one direction but no in the other, If it is a clear valve the air flow should be in the direction of the taperd end of the valve inside.

As for the yeast, I would start over. Here is the recipe I use. I've tried a couple different ones and this is the best so far:

Make sure your bottle is clean. I just rinse mine with hot water each time I redo it.
Fill the bottle 2/3 full with warm water
Add 2 cups sugar and 1 tsp baking soda to the bottle and shake until completely disovled.
Take 1/2 cup very warm water and add 1/2 tsp yeast, stir briskly to disolve.
Let the yeast sit for 10-15 nimuntes to activate. (it will become really foamy)
Add the yeast mixture to the bottle (no need to mix) and within 24 hours your should see it starting to work. It will be slow at first but it will increase over the first couple days and should last about 3 weeks or so.

What size is your tank?
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Old 09-05-2011, 03:50 PM   #12
 
Its a 29 gallon. Thanks for the detailed instruction I'll test it out today
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Old 09-05-2011, 04:31 PM   #13
 
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Good luck!
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Old 09-05-2011, 06:46 PM   #14
 
I can hear it fizzing pretty sure bubbles should come now
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Old 09-06-2011, 06:27 PM   #15
 
Alright... so 24 hours later and still no bubbles. I have approximately 5 feet of aquarium tubing between the bottle and the tank... should I shorten it?

Also was just going to use an air stone as my "diffuser" but decided to leave the end open until bubbles appear out of the tubing... good or bad idea?

Thanks!
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Old 09-06-2011, 08:27 PM   #16
 
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Do you have fish?


Might want to run a gas separator.


Here's a link to a DIY: DIY CO2 System for Planted Aquarium
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Old 09-07-2011, 12:34 PM   #17
 
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Be patient. It might start out slow at first. Also I would use at least an airstone as a diffuser that way more of the c02 will be absorbed before it escapes the aquarium. How is it doing now?
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Old 09-07-2011, 05:02 PM   #18
zof
 
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Stupid question but is the bottle air tight?
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Old 09-07-2011, 07:02 PM   #19
 
well, i took off the airstone to see if anything would come out and I came to a bubble sitting at the end of the line. No major bubble stream yet.

I sealed the bottle with aquarium silicone around the line so I'm pretty sure that it is air tight.

I tested the check valve to make sure air could get to the end of the line by slightly squeezing the bottle... it did very easily. Also tested the line with an air pump, no leaks at any point.

I still hear the fizzling in the bottle, so I know that gas is being produced but I do wonder if it is escaping via something else.

I'm using Red Star Dry Active Yeast.
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Old 09-07-2011, 09:12 PM   #20
 
I'm going to redo the bottle again. Smelled like alcohol when I opened it so I know its working somewhat
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