diy co2 setup - The Planted Tank Forum
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post #1 of 5 (permalink) Old 08-07-2013, 07:09 AM Thread Starter
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diy co2 setup

So i decided to connect a check valve to the co2 tubing but the co2 bubbles arent coming out yet. how much time do i need to give it after reconnecting the co2 to the tubing with the if it even works!
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post #2 of 5 (permalink) Old 08-07-2013, 08:33 AM
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Double check that the check valve is installed in the right direction.
Some check valves have high crack pressure that your DIY might not be able to overcome.
Check for leaks on both ends of the check valve connections.
Make sure your co2 hoses as short as possible.
Install the check valve as close to the diffuser as possible, but out of water.

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post #3 of 5 (permalink) Old 04-15-2016, 09:11 PM
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Problem with diy co2 system

Been trying to find an answer to this problem but have not found one. Hope this is the place to come to. I ordered a D301 generator on ebay that uses Citric acid and baking soda. After a lot of research I finally found a formula to set the thing up, the directions that came with it looked more than a micro dot than anything else. I mixed up the ingredients in the two bottles and marked them. The setup has a gauge on the acid bottle and a cap unit with a hose going to the soda bottle. My problem is that when I follow the directions and squeeze the acid bottle to get some solution into the other bottle so that it creates co2 I get a reaction and bubbling. The information that I have found says to close the needle valve going out of the soda bottle to allow the pressure to build to 1 to 2 on the gauge. I get the reaction and the bottles actually get so hard that they will not squeeze but the pressure only moves a little bit on the gauge and nowhere near 1. I have tried recharging the system a few times with the same results. I am lost and need help finding a solution. The system is on a 37 gal tank. Thanks for any help or suggestions anyone has. I have been an aquarist for more years than I want to admit but this is the first time trying to do a planted tank.
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post #4 of 5 (permalink) Old 04-15-2016, 09:19 PM
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post #5 of 5 (permalink) Old 04-19-2016, 05:35 PM
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Sugar and yeast can produce some immense pressures, albeit it is a slow build up. This brings to light an air leak of some sorts. If your leak has less pressure to open than does your one way valve you will never build pressure to open the valve. I am assuming you are using a plastic bottle, give it a squeeze and see if bubbles come out.Depending on how hard you have to squeeze will indicate how big of a leak you have.

Bump: If your bottle is tight and shows no pressure on the gauge I would assume the gauge is faulty.
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