Trying out Citric acid and Baking soda CO2 - Page 58 - The Planted Tank Forum
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post #856 of 868 (permalink) Old 11-09-2018, 04:58 AM
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Thumbs up Just setup my own with 2.5 Liter bottles.

Set one of these up today on a 55 gallon tank with a bubble counter/diffuser. It is going through a Wyin Solenoid with a check valve setup as well.

So far for the first day it is working great.

I did not really read through all 57 pages of this post so I am not sure if others have tried it yet but I did not go with 2 liter bottles.
I found that dollar tree sells 2.5 and 2.75 liter sodas allowing quite a bit more space to work with.
They are the same size around but taller.

For my first batch I went with 1 1/2 Cups Citric Acid and 4 1/2 Cups of water on one side and 1 1/2 Cups Baking Soda and 1 1/2 Cups of water on the other side.
Next time I plan to go with 2 + 6 and 2 + 2.

I know there are already a couple videos on youtube but I recorded another one showing the setup of this with the 2.5 Liter bottles, and what it looks like once its hooked up to the tank and running.
Can see that here if interested.
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post #857 of 868 (permalink) Old 11-14-2018, 01:03 AM
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After running for about 5 days at 3.5 BPS for 10 hours a day this is where I currently sit on usage:




It is reasonably steady, but a time or two the pressure really spiked, so I do have to keep my eye on it and cannot just leave it going for a week.
There are zero leaks as far as I can tell as well. The pressure appears to hold completely steady while it shuts off at night.
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post #858 of 868 (permalink) Old 11-16-2018, 02:48 AM
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Got a week usage out of it. Just filled up again and doubled the batch size this time to see if it lasts longer.
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post #859 of 868 (permalink) Old 11-26-2018, 01:20 AM
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It looks like I am getting 11 days out of it this time compared to the 7 days previously. By going from 1 1/2 Cups to 2 Cups.

So a pretty even increase in duration based on the addition amount I added.

Edit: Looks like I am actually going to get 13 days out of it, not the initial 11 I was expecting.
Edit 2: Make that 15 days or possibly even 16, which is really not bad.

Here are the photos of the current usage near the end of day 14. Should be enough pressure left for 1 or 2 more days.



Last edited by Halaster; 11-29-2018 at 09:58 PM. Reason: Added additional information.
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post #860 of 868 (permalink) Old 01-07-2019, 12:02 PM
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Hey guys, I am new to this DIY Co2 setups, infact never done any Co2 setup before, so I have ordered the equipment for DIY which should arrive in a day or 2, however the ingredients for the co2 recipe are creating confusion to me, some website stores in my country don't have baking soda as the name but sodium bicarbonate...is it the same thing? and they also list citric acid as lemon salt...is it also the same thing for the recipe(mix) of co2? please help.
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post #861 of 868 (permalink) Old 01-07-2019, 01:11 PM
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Originally Posted by warendamikes View Post
Hey guys, I am new to this DIY Co2 setups, infact never done any Co2 setup before, so I have ordered the equipment for DIY which should arrive in a day or 2, however the ingredients for the co2 recipe are creating confusion to me, some website stores in my country don't have baking soda as the name but sodium bicarbonate...is it the same thing? and they also list citric acid as lemon salt...is it also the same thing for the recipe(mix) of co2? please help.
Yes, baking soda is what many countries call sodium bicarbonate. It probably depends on where you buy it.

Lemon salt appears to be citric acid. That's a new one to me, but I looked it up and sure enough... Same thing!

Good luck!
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post #862 of 868 (permalink) Old 01-07-2019, 01:47 PM
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Originally Posted by natemcnutty View Post
Yes, baking soda is what many countries call sodium bicarbonate. It probably depends on where you buy it.

Lemon salt appears to be citric acid. That's a new one to me, but I looked it up and sure enough... Same thing!

Good luck!
Thanks mate, I'll proceed with purchase.
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post #863 of 868 (permalink) Old 05-08-2019, 09:38 AM
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Hi guys, I have a problem with my acid citric diy co2 generator.
I follow all the procedure carefully, I checked the instruction the videos on you tube, but still my bottle A run the liquid in a couple of hours.
Can someone help me?

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post #864 of 868 (permalink) Old 05-10-2019, 01:00 AM
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Originally Posted by paolinobg View Post
Hi guys, I have a problem with my acid citric diy co2 generator.
I follow all the procedure carefully, I checked the instruction the videos on you tube, but still my bottle A run the liquid in a couple of hours.
Can someone help me?

Sent from my VKY-L29 using Tapatalk
Check for leaks



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post #865 of 868 (permalink) Old 05-11-2019, 01:11 AM
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Hi guys, my system last a couple of hours, I do 1 bbs, what's wrong with my system

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post #866 of 868 (permalink) Old 05-12-2019, 03:46 AM
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Hi guys, my system last a couple of hours, I do 1 bbs, what's wrong with my system

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Might be a leaky valve, that's happened to me before.


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post #867 of 868 (permalink) Old 05-28-2019, 07:24 PM
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Can you use baking powder instead of baking soda??? Thanks.

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post #868 of 868 (permalink) Old 05-28-2019, 08:36 PM
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Can you use baking powder instead of baking soda??? Thanks.

Baking powder is sodium bicarbonate, which yields a fair amount of carbon dioxide per pound. Baking powder is sodium bicarbonate to which an acid has already been added, in dry form. Add water and the reaction goes to completion. It's as if you poured your baking soda and citric acid into one bottle to begin with. Not recommended.
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