Aquarium Info CO2 Calc? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 06-13-2017, 07:15 PM Thread Starter
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Aquarium Info CO2 Calc?

Is this calculator correct?

Aquarium CO2 Calculator

I keep seeing everyone say shoot for 30ppm by using 3-5 bps, but for my small 9.3g tank, this site is saying to only use .2 - .3 bps! Huge difference. I have been running 3bps for 4 days and my pH dropped from 6.5 to 6.0 or lower.



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post #2 of 6 (permalink) Old 06-13-2017, 07:59 PM
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I wouldnt trust any calculator that claims to know how many bps it takes to reach a certain ppm.

All bubbles are not created equal. Both the working pressure and the resistance at the diffuser/reactor, whatever, affect how big or small the bubbles are.

Also it should be obvious that how many bps a particular tank needs depends on how efficient the diffusion method. The better the diffusion, the less co2 is wasted, hence less is needed to reach the desired concentration.

Having said all that, .2-.3 bps likely isnt near enough for a 10 gal to reach 30 ppm. 1-3 bps should be closer to the ballpark.


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post #3 of 6 (permalink) Old 06-13-2017, 09:39 PM Thread Starter
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I put this drop checker from Rhinox in yesterday, but it remains the same olive green color. Can't tell if it working or not. I ran CO2 during lights on only for 8 hrs. Over 24 hours it has not changed color. I assumed it would change because of the lack of CO2 overnight.

https://www.amazon.com/Rhinox-Glass-...ct_top?ie=UTF8



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Ultum Nature Systems 45U Rimless, 9.3 gal
Current USA Satellite LED Plus, 18 inches (~8hrs/day)
AquaSoil + PowerSoil Special
Fluval Mini Pressurized CO2 20g
Seiryu Stone + Spider Wood Driftwood,

Last edited by Lionheart; 06-13-2017 at 09:40 PM. Reason: more details.
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post #4 of 6 (permalink) Old 06-13-2017, 09:45 PM
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Forget the drop checker

Buy a $20 digital PH pen and some 7.0 calibration solution.

Go by the relative PH drop between tank water with the co2 running and degassed tank water (put some in a bowl and let it sit for 24 hours)

Shoot for a full 1 point drop, ideally by the time the lights come on, or soon after.

A 1 point drop equals roughly 30 ppm in most tanks.


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post #5 of 6 (permalink) Old 08-17-2017, 02:26 PM
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Hello Burr,

When you say a 1 point drop do you mean let's say from 7.0 to 6.0 or 7.0 to 6.9?

I am battling loss of fish in a newly setup 60 gallon tank, the tank cycled almost a month ago, but fish still get stressed when I put them in, I am suspecting CO2 may be the culprit.

Thanks.

Mike.
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post #6 of 6 (permalink) Old 08-17-2017, 02:55 PM
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Quote:
Originally Posted by acmeseed View Post
Hello Burr,



When you say a 1 point drop do you mean let's say from 7.0 to 6.0 or 7.0 to 6.9?



I am battling loss of fish in a newly setup 60 gallon tank, the tank cycled almost a month ago, but fish still get stressed when I put them in, I am suspecting CO2 may be the culprit.



Thanks.



Mike.


1pt drop not a .1 drop. So say from 7.0 to 6.0


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