Calculating How Much Co2 I Need In My Tank

[migdem]

So my tank a 60 litre tank has a PH of 8 and KH of 3. According to the CO2 chart I have 0.9ppm CO2. Now the ideal CO2 concentration for a CO2 enriched tank is anywhere between 15ppm and 30ppm.

How can i calculate co2 in bps to enter my tank to achieve at least 15ppm meaning ph down to 6.8 and kh remains at 3.

CO2 - PH - KH Chart

 

[RadaR]

You cant calculate it.
You just have to choose a bubble rate, observe and then adjust as neccasary. If the plants suffer and you see algae, then turn it up. if your fish start to appear drunk/gasp for air then you've got too much.
Also, dont use pH/KH charts. There are plenty of other things in the water that are effecting pH instead of just carbonic acid (dissolved CO2).
This bit of reading should clear everything up for you.

 

[ian]

When i started i started with 1 bps and observed, i'm now upto 3bps and seem to be doing well.

 

[migdem]

But in a 60 litre tank i think i should not exceed 2 bubbles per second (too much for so little water)

 

[PDSimon]

It depends on the bubble size, but yes it will probably be below 2. Thats why you use a drop checker as RadaR has kindly posted