For my science project, I need to see how much CO2
was used by my algae. I'm going to be growing them in bottles. To measure CO2
intake, could I keep the bottle capped and trap the CO2
with KOH (potassium hydroxide) as KHCO3 (potassium bicarbonate, a solid). And then use a wet cotton ball or paper tissue with the KOH, weigh it, then stopper up the test tube with it. When its done, take it out and weigh it again and use the difference in weight as the weight of the CO2
consumed by my algae?
Or would that kill the algae because it won't be aerated??
And they will grow for about a week.