Pressure Issue In DIY CO2 - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 09-08-2017, 04:41 AM Thread Starter
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Pressure Issue In DIY CO2

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Recently i have purchased this DIY Co2 kit. When i started it, i was able to achieve a constant 1bps. However, the next few days it became close to 1 bubble per 6 sec. Is the pressure dropping? This kit will auto siphon the citric acid mixture to the baking soda once there is a difference in the internal pressure in the bottle. Technically the pressure should not run low as it is constantly siphoning the mixture as needed to create the co2. I am not a science geek, am i missing something here? by the way i am using the co2 ladder as the diffuser.

I understand that if you are using the yeast and sugar method, its kinda common to have inconsistent pressure.
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post #2 of 3 (permalink) Old 09-10-2017, 05:04 AM
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Sounds like you probably have a leak. Make sure the O rings are in the holes where you screw in the bottles and use soapy water to check all connections for a leak.

I have this same kit with citric acid and baking soda mix at work, and I get about 3-4 weeks per mix in my Spec V.

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post #3 of 3 (permalink) Old 09-12-2017, 06:48 PM
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Quote:
Originally Posted by Xenogade View Post
http://i866.photobucket.com/albums/a...pse1514c9a.jpg

Recently i have purchased this DIY Co2 kit. When i started it, i was able to achieve a constant 1bps. However, the next few days it became close to 1 bubble per 6 sec. Is the pressure dropping? This kit will auto siphon the citric acid mixture to the baking soda once there is a difference in the internal pressure in the bottle. Technically the pressure should not run low as it is constantly siphoning the mixture as needed to create the co2. I am not a science geek, am i missing something here? by the way i am using the co2 ladder as the diffuser.

I understand that if you are using the yeast and sugar method, its kinda common to have inconsistent pressure.
I am pretty familiar with the DIY citric acid CO2. Unfortunately I found that the working pressure changes quite a bit as it uses more of the citric acid. I usually found that the working pressure increased over time though and would peak right as the last of the citric acid was siphoned over (usually after a week and a half or so). If your using the kit of Ebay I found the needle valve was garbage and might be the source of inconsistency. With the stock needle valve I had to adjust the flow every few days. It might be worth getting a better needle valve and putting it in-line after the stock one.

If you ever upgrade to a pressurized system you can re-use the needle valve so get a good one. More of an investment than simply trying to throw more money at a DIY CO2 imo.
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