I posted this on "another forum", but wanted to post here to cover the topic.
Has anyone experimented with a baking soda/vinegar drip CO2 generator?
A compost CO2 generator? I'm going to try the compost generator actually. I have a ten gallon test tank setup and some plants for the test. I'm going to use a 5 gallon bucket as the compost generator, with peat, and other organic materials plus water. The outcome will probably be unstable and inconsistant as far as CO2 production, but it will also cost nothing and only produce a good planting soil if it fails
The only bit I haven't figured out is the O2 part. If no O2 is present then it will produce methane.
I thought about filling the bottom 1/3 of the bucket with water, and installing an air pump/diffuser in the bottom of the bucket to introduce O2 to the brew. That will of course mean that part of the output will be O2 also right? That's not a bad thing. What am I missing here? I've been researching and still am. I'll post the experiment here if anyone is interested.