What is your CO2 ppm?
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Old 05-22-2004, 04:24 PM   #1
Georgiadawgger
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What is your CO2 ppm?


I was just wondering what everyone else has as their CO2 ppm? I have a pretty good working DIY reactor (reverse flow powerhead) with my DIY yeast. Using Chuck's calculator I have 18 ppm CO2 (pH7, kH 6). All of my plants pearl in the evening (Hygos, Anubias, etc). Just wanted to know if I should try to "bump" it up more or keep it as it is.
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Old 05-22-2004, 10:10 PM   #2
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I run 31 ppm via a pressurized setup with a homeade reactor. I find I get stronger plant growth and less algae with around 30 ppm of CO2. And of course it's no danger to fish.
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Old 05-22-2004, 10:18 PM   #3
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30 ppm with DIY and an inline reactor... no complaints.
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Old 05-23-2004, 01:14 AM   #4
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Quote:
I run 31 ppm via a pressurized setup with a homeade reactor. I find I get stronger plant growth and less algae with around 30 ppm of CO2. And of course it's no danger to fish.
Just curious where you find this. I am fairly newe to Planted Tanks and yes I see that many people keep their CO2 in the 25-30 range but every and I mean ever article you read about fish always saw to keep the CO2 under 20.

Please understand I am not picking on you floater, I am just looking to sleep better with my tank because I do like my fish too. Thanks
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Old 05-23-2004, 01:26 AM   #5
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I've been running it this high for 2 years now without issue. I have seen others post with numbers this high and they have had similar experiences.
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Old 05-23-2004, 03:01 AM   #6
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My C02 is kept at 22ppm with DIY setup.
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Old 05-23-2004, 02:31 PM   #7
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I keep mine rather high at 35PPM-(pressurized) Never had any problems......
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Old 05-23-2004, 02:49 PM   #8
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I run mine at 30ppm.... No problems
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Old 05-23-2004, 06:08 PM   #9
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Quote:
Just curious where you find this. I am fairly newe to Planted Tanks and yes I see that many people keep their CO2 in the 25-30 range but every and I mean ever article you read about fish always saw to keep the CO2 under 20.


Ah, the reason why I'm asking. I have pretty good results so far at about 17, and I don't know if one bottle of DIY will get me to 30. My reactor can handle the current load, but I'm thinking if I add another bottle, it will push larger bubbles out of the bottom of the gravel vac tube.
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Old 05-25-2004, 05:19 AM   #10
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All my tanks have 30-35ppm CO2 level and have no problems so far
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Old 05-25-2004, 06:27 PM   #11
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well, according to the simplified calcs, I have around 72ppm CO2. My fish seem perfectly healthy

One thing to consider is that the spread sheets are best case scenario meaning that all protons (H+) comes from carbonic acid. If you have any other source of protons such as tannic or humic acids,..like from driftwoods or peat...then the CO2 table OVERPREDICTS CO2 levels.

I really doubt that many people really have the CO2 levels they think they have (if just using the KH/PH table).
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