DIY CO2 Question - The Planted Tank Forum
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post #1 of 5 (permalink) Old 12-04-2006, 09:40 PM Thread Starter
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Question DIY CO2 Question

Newbie to CO2 a bit confused

First question: Is the reason for using larger CO2 containers to get more bpm or longer times between mixture changes, or both?

Second question: Thus far using only the small Hagen cannisters and varying the mixture a bit, I have only been able to get about 10 bpm from each (use two). What is the maximum bpm I can expect from a DIY unit?

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post #2 of 5 (permalink) Old 12-04-2006, 11:17 PM
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I'll take a stab at your first question.

I think you'd get more BPM, but assuming you're using the same water to sugar to yeast ratio, it won't last any longer. The reason it stops working generally is that the mixture ferments and the yeast die from the alcohol, so with the same ratio, the yeast would reach the point that it couldn't survive in the same amount of time. But the mixture would give off more CO2....

Can't help you here as I don't use bubble counters.

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post #3 of 5 (permalink) Old 12-04-2006, 11:23 PM
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I believe the reason for larger containers is simply that they will last a little longer, or produce slightly more Co2. I also know of people who hook up 2 or 3 2-liter bottle in-line, so even when one needs to be recharged, there's never a time when Co2 isn't pumping out. You *can* add more sugar if you want it to last a little longer (sugar is food for the yeast), or more yeast if you want faster bubbling, but it will run out sooner.
As for your second question, I'm not sure.


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post #4 of 5 (permalink) Old 12-04-2006, 11:33 PM
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my DIY would initially pump about 2 bubbles per second. but that lasts for only a couple of days. im in my second week or so and the bubbles have tapered off to about 2-4 bubbles per minute.
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post #5 of 5 (permalink) Old 12-05-2006, 01:26 AM
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I dont use a counter on my DIY setup. I will be maiking one soon. I use a 1G container. It was easy and has a wide stable base. I know when I renew the bottle it bubble like crazy I havent counted but I can see the mist flowing. After a couple of days it cuts back. I know I get atleast 1 BPS for the last of 2 weeks. I will be adding a 2nd bottle this weekend then Just alternate the weeks that I change them I will have more constant CO2 Levels. Also the warmer you can keep the bottle the more CO2 it will prodice. When I get my Canopy Done both bottle will sit on it for heat.

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