Are DIY or grow shop CO₂ Generators any good?

I test some cheap CO2 generators in a grow setup. See the full blog article with test results here: migrolight.com...
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Join the MIGRO community on our Discord server and share knowledge and growing experience with each other. We have grow diaries, Q&A, growers help topics, giveaways, monthly prizes and more.
Join our server here: / discord
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