It’s winter…single digit outside temps….the central heat caused my 2x4 grow tent RH to be 36%.
Starting my third grow in solo cups with a ziplock over the top, but when I eventually pull the plastic coverings, the RH needs to be higher. A bucket with water, towels draped down into it with a fan blowing over the top has raised the RH to 72%. Should be acceptable for vegitative growth.
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Nice work man. I use similar things in my tents too 🌱🪴🤙🏻