I have a small garden that’s about a meter square and I’ve used CO2 before in theform ofdub soda without salt added (seltzer). I’m not satisfied with the results. I did get a good harvest but I don’t think it was worth the effort. I don’t wart to invest hundreds of dollars into a CO2 tank for such a small garden. What do you think about Alka Seltzer? When mixed with water it emits lange quantities of CO2, quite a bit more than Club soda plus it’s cheaper; easier and it seems like it would be more effective.
Gardeners find that spraying seltzer on their seedlings increases their growth and stem stoutness. However, it isn’t a good idea to spray buds with water, especially as they near ripening.
I get a stomachache just thinking about how much Alka-Seltzer will cost you and how ineffective Chose little pills will be. They will supply the plants with occasional bursts of CO2 but won’t supply them with constant enrichment during the lighted hours.
Although a CO2 unit that measures gas parts per million and supplements it as needed is a costly up-front investment, it is well worth it, and will pay for itself in increased yield the first crop. It will increase the yield considerably and costs pennies a day to run in a small garden.