How many CO2 bubbles per minute?

BiZAceTriZ

BiZAceTriZ

AC Members
Apr 21, 2007
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i'm having trouble trying to figure out how much CO2 is needed for my 17 gallon tank

the ph is around 6.4-6.6
Kh about 2-3degrees

question is how many CO2 bubbles in one minute?
 
BiZAceTriZ said:
i'm having trouble trying to figure out how much CO2 is needed for my 17 gallon tank

the ph is around 6.4-6.6
Kh about 2-3degrees

question is how many CO2 bubbles in one minute?
Click to expand...

You need enough bubbles to get 30 ppm of CO2. But first you need to get better tank readings. Why? Let me show you.

pH 6.4 KH 2° = 23.9 ppm
pH 6.4 KH 3° = 35.8 ppm

pH 6.6 KH 2° = 15.1 ppm
pH 6.6 KH 3° = 22.6 ppm

So all you really know is either you have plenty of CO2 or not nearly enough.
 
Well i've checked again and my ph is around 6.5
KH around 2 degrees
btw, how do you calculate the amount of CO2 by using ppm?
is there a way to measure it?
 
BiZAceTriZ said:
Well i've checked again and my ph is around 6.5
KH around 2 degrees
btw, how do you calculate the amount of CO2 by using ppm?
is there a way to measure it?
Click to expand...

I think your a bit confused. You dont calculate co2 using ppm, ppm is a unit of measure for co2 concentration (parts per million). You calculate co2 by using pH and KH like in the link mgammer2000 has posted twice as well as others. But that method is very inaccurate. You can see that by your rough estimates how much variance there could be (as pointed out in rex's post). Cheap test kits arent very accurate plus your reading of the test kit isnt accurate either. Then you have two different tests and the error multiplies. It wouldnt be an exaggeration to say you would have +100%/-50% margin of error using test kits and the calculator/charts.
You might want to look into a DIY drop checker, they are usually the best way accurately gauge the co2 in your tank.
 
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