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  1. R

    Does VPD vary for different plants?

    It seems like VPD is a calculation of a lot of things that are not related directly to the plant, but to the environment. And then another step for context, adjusting for the difference between room temp and plant leaf temp. But the variable part seems to me the charts that say "here is the...
  2. R

    I have questions. Filling in knowledge gaps.

    I continue reading the forum (I swear it's endless) and I found a thread about CO2 that had this interesting quote: Sadly I put the quote in my text notes file I keep while skim-reading, but did not record the thread link or the author, gah. Apologies for that.
  3. R

    Killer info for setting up a CO2 equipped grow room!

    This is very interesting. I was bedridden for a few years, in a tiny room exactly the size you mention. I had this constant issue I complained about where "it feels like there is not enough oxygen in the air." I had a window a/c but it doesn't pull from outside. The door rarely opened. (Solitary...
  4. R

    I have questions. Filling in knowledge gaps.

    On CO2, I found this pretty good video that showed me a few different ways it's done. Gary at PA Hydroponics: As an aside, I have a little countertop CO2 carbonator for homemade drinks. I recently found a video showing you how you can make your own CO2 for those bottles rather than paying to...
  5. R

    I have questions. Filling in knowledge gaps.

    Howdy everyone. I've been lurking here a long time, and only recently finally registered. I've read a ton of threads with differing opinions (so, my mind boggles), and along the way have come up with a few questions that weren't addressed, found in topics I liked. Anybody who might elaborate...
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