What do I need to know about DIY C02? - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 10-03-2015, 05:46 PM Thread Starter
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What do I need to know about DIY C02?

Hello. I'm still new about how C02 works and how the plants can benefit with it. But at the same time too much c02 can kill fish??

I've been looking at youtube videos so that I can make one for my 40g tank and I keep seeing some people mix this or some mix that to do C02. Or some use a "pressured" thing to control how much C02 the tank gets or some dont don't use it (I could be wrong). If you don't keep an eye on the DIY c02 it could "explode?" (is that true?) Or if you don't turn it off at night the fish die?? (someone correct me?)

I want to give it a try and do a DIY C02, but I'm just lost.

Can someone please help or give me some advice? I have algae and I want to try c02 and see if it reduce the algae a little bit. I haven't bought Flourish Excel yet, but I will soon.

Thank you.
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post #2 of 11 (permalink) Old 10-03-2015, 08:59 PM
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https://www.plantedtank.net/forums/20...em-how-do.html is how I did it. I found that it was very hard to avoid BBA problems, even with low light, because the concentration of CO2 in the water would vary too much from day to day. As a result I now use only Excel (actually Metricide).

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post #3 of 11 (permalink) Old 10-03-2015, 09:33 PM
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Quote:
Originally Posted by Manami View Post
Hello. I'm still new about how C02 works and how the plants can benefit with it. But at the same time too much c02 can kill fish??

I've been looking at youtube videos so that I can make one for my 40g tank and I keep seeing some people mix this or some mix that to do C02. Or some use a "pressured" thing to control how much C02 the tank gets or some dont don't use it (I could be wrong). If you don't keep an eye on the DIY c02 it could "explode?" (is that true?) Or if you don't turn it off at night the fish die?? (someone correct me?)

I want to give it a try and do a DIY C02, but I'm just lost.

Can someone please help or give me some advice? I have algae and I want to try c02 and see if it reduce the algae a little bit. I haven't bought Flourish Excel yet, but I will soon.

Thank you.
I'm using DIY CO2 on a 30g and a 10g tank. I described it in this thread: https://www.plantedtank.net/forums/9-...ml#post8365113

If you have any specific questions, let me know.

I doubt you would be able to generate enough CO2 to kill fish in a 40g. DIY works best when the room temperature is high. I don't use airconditioning air-conditioning and room temps were in the 80-85F recently. Running CO2 24/7 didn't kill my fish.

If you find your fish at the surface gasping for air, add an airstone bubbler. This will help oxygenate the water and drive off excessive CO2. You could put it on a timer and just run it at night. When there is no light in the tank no photosynthesis takes place and plants don't use any CO2. So, early morning is the time when your fish might need more oxygen. I very much doubt you would need to run it during the day. Plants will be generating oxygen if they have enough CO2, light, and nutrients to work with.

We've had a few cold days here with room temps around 70F. The Yeast isn't producing enough CO2 to support a bright light setup. I've had some algae appear and I've had to shut down one of my lights (Fluval Aquasky LED. Still running a Finnex 24/7). Since winter is coming on I've ordered a pressurized CO2 system to replace the DIY yeast.
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post #4 of 11 (permalink) Old 10-04-2015, 12:59 AM
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In addition to the above, there's a pretty useful link in my sig how to do it effectively


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post #5 of 11 (permalink) Old 10-04-2015, 01:08 AM Thread Starter
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Ok. I'll start with excel first and see how it goes. Until I get a timer, I'm turning the light off a little earlier than before.

The algae seems to grow faster when I add liquid fertilizers. (I'm adding once a day 1 of 3 different LFerts.) I'm adding the amount as if my tank was a 30g instead of 40g.

OFF TOPIC: I'm noticing my two blue mickey mouse platies eating the bba algae. Do platies like to eat it? Should I get more? Like 2 or maybe 4 swordtail male platies?

EDIT: burr740: I didn't see your post. I'll check your link!
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post #6 of 11 (permalink) Old 10-08-2015, 05:30 PM
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I was looking for something at Petco and found reptile heater pads. This might work to keep the yeast bottle warm. I would try it if I hadn't already ordered a pressurized system.
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post #7 of 11 (permalink) Old 10-09-2015, 11:20 PM Thread Starter
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You're supposed to have the C02 bottles heated up at all time? Or just when preparing the indredients before use?
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post #8 of 11 (permalink) Old 10-09-2015, 11:27 PM
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If you add heat to a mixed reactor bottle, the production rate will increase. This comes at the expense of longevity.

Keeping a DIY system running consistently from one day to the next is challenging enough.... without trying to squeeze another 1/2 bps by adding heat.

Unless you are experienced, have a good system in place, and a clear reason to do so, I would suggest not to mess with trying to add heat.


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post #9 of 11 (permalink) Old 10-10-2015, 06:35 AM
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I used to keep my 3 generators in a water-bath with a aquarium heater at 30C. Recharging one bottle each week and keeping them at controlled temperature ensured even production. I even used to store the CO2 produced after lights-off period and control the supply to my tank with a needle-valve so the rate of CO2 enrichment could be more or less constant.

If you have a choice, you have a problem, till you elect your choice. No choice, no problem, only consequences, learn to live with them.
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post #10 of 11 (permalink) Old 10-10-2015, 07:05 AM
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I am planning to eventually move from excel to a DIY so I was looking around the forums and youtube. I found that people have started to use citric acid and baking soda for their source of CO2 now. The CO2 DIY kits come with gauges that allow you to control how much CO2 you want to introduce into the system. Im just basing this off of the youtube video from "the king of diy". Here is the video link: https://youtu.be/1JzvfHO31Ug
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post #11 of 11 (permalink) Old 10-10-2015, 07:21 AM
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Quote:
Originally Posted by KairuW View Post
I am planning to eventually move from excel to a DIY so I was looking around the forums and youtube. I found that people have started to use citric acid and baking soda for their source of CO2 now. The CO2 DIY kits come with gauges that allow you to control how much CO2 you want to introduce into the system. Im just basing this off of the youtube video from "the king of diy". Here is the video link: https://youtu.be/1JzvfHO31Ug
A few guys here are doing this and talking about it here - https://www.plantedtank.net/forums/20...-soda-co2.html


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