Brian ÓI got my CO₂ meter AND the soda lime last night, so I was able to build and test the scrubber. I put them under and inverted fish tank, and over the course of 20 minutes the CO₂ level dropped from 1148 to 691 ppm. I wanted to get to bed, so I didn't let it run longer, but I expect it would have continued to drop. Now the real test is to see if it can keep the CO₂ below 1000 ppm inside my fruiting tent, which is currently at about 1400.
I have the meter connected to a raspberry pi which is sending the readings to grafana, so I'll be able to chart the results and hopefully at some point automate the scrubber.
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