How to tell when the DIY bottle has ran its course - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 03-11-2006, 06:35 AM Thread Starter
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How to tell when the DIY bottle has ran its course

Since i got my pressurized CO2 system I moved my bottles to the 20 gal.

It now has 2, 2 liter pepsi bottles, and 1 small hagen nutrafin canister....

They are all connected via a 3 way connector to the main line...

but how do you know when one or two is gone and needs replaced.. I think it would be a good idea to keep it consistant and replace say one a week... But can you look at it and tell when its done its job and has nothing left?


Will work for good water and co2.
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post #2 of 4 (permalink) Old 03-11-2006, 07:24 AM
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Wouldn't that be when the bubbling slows down? I haven't used this for many years, so I don't remember excactly...
However, when making wine (basically the same thing ) I use a small "water lock" on top of the container so that I can count the bubbles. Maybe it's possible to do something similar? Just a thought...
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post #3 of 4 (permalink) Old 03-11-2006, 06:54 PM Thread Starter
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Having 3 containers all connected together its kinda hard to know when the bubbling slows down in the tank, i would prefer that it never slows down, thats kinda the point i am trying to have 3 co2 bottles.. i just figured maybe i could just change the 2l's, once every other week...

week 1, 2l #1
week 2, 2l #2
week 3, 2l #1
week 4, 2l #2

I donno, but its been my oppinion that the DIY co2 in the 2l doesnt last for more than 2 weeks, so that even if its not totaly done its thing it woudlo be a good time to change it regardless.


Will work for good water and co2.
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post #4 of 4 (permalink) Old 03-12-2006, 01:47 PM
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Use a mini bubble counter on top of each bottle to see if each is still pumping CO2 (higher pressure than the overall pressure = producing gas).

or

Observe visually the solution. If you use sugar and bakers yeast mix, the colour is murky and yellowish to a bit brownish when there are a reasonable amount of yeast alive in it. When it turns reddish and somewhat clear, the there are very little or no yeast colony alive in it (because the sugar is exhausted or the alcohol level is already too high). Replace the solution.


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