co2 question

[WaterPond]

I know that one is to aim for 30ppm co2. Well, i am a little bit over at 34ppm. I have also heard that anything over 100ppm will kill the fish. So does this mean i am ok, if i keep an eye on it and make sure it des not go up?

 

[rich311k]

34 ppm is fine. Lots of folks shoot for 35- 40 to compensate for test kit inaccuracies.

 

[u2_Crazy]

Sorry for jumping in here, but what is the best way to test for your CO2 level?

 

[WaterPond]

you need a co2 calculator, you can find these on the internet. And you need to know your KH and pH, not sure exactly what math they use.

 

[Purrbox]

The formula is as follows:
CO2 (in PPM) = 3 * dKH * 10^( 7-pH )

 

[WaterPond]

it went up to 74 ppm !!!! whats going on? my silver tip tetras are acting funny... time to put in the bubbler.