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366 Posts

How do you measure CO2 PPM? Is it just calculated based on your bubbles per second? Or is there an actual test?

I know that CO2 effects PH. I ordered a drop checker to help with that. But I want to know how to determine the exact CO2 level in my tank.

By the way, I have a 75g tank that will have x4 64w T5 HO bulbs and a pressurized CO2 system. Thanks.