I currently own a 60 gallon high tech planted tank. CO2 Pressurized, I would like to know how much ppm of co2 will I have if I go for 1 bubble per 5 seconds? And then gradually 1 per 4 seconds, 1 per 3 seconds, and finally 1 bubble per seconds? I will be getting a dual drop checker by cal aqua labs. How will you know once you reach 30ppm of co2?