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    Bringing grow tent temp down to 42-50F

    Hello. I'm trying something a bit unusual, it's not for growing cannabis but I figured I would have the best chance asking here. What I'm trying to do is get the temperature in a 4'x4' grow tent down to 42-50F (6-10C) in the winter over the nights. During the nights in the winter, the outside...
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    Can't figure out why my DIY soil mix has poor drainage

    25 EUR for 60 liter. Using it for my other plants as well. I already have a lot of magnesium in my other things so I was worrying that the one from the dolomtie will be too much. I was told a total of 2 - 2.5 cups of amendments per 7.5 gallon, which is what I have. It was mainly from Rasta Roy...
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    Can't figure out why my DIY soil mix has poor drainage

    I'm hoping someone can help me figure out what's wrong with my soil mix. The drainage is perfect during first watering, but after it dried and is watered for a second time it puddles and drains super slow. It's sticky and feels like it has clay in it, even though I'm 99% sure it doesn't. I don't...
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    Compost ruining drainage - normal behavior?

    Hello. I've noticed that when I use compost in my mix, my soil behaves completely different than if I don't use it - and not in a good way. Without compost added, I can water a pot as much as I want in a single watering session and the drainage stays consistently good. When compost is added, the...
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    Specific light wavelength causing more photobleaching/light damage than others?

    I've come to the conclusion that it's dependent on a lot more factors than just the strength of blue light. Adding more red light allowed my plants to take the same amount of blue light without any photobleaching or turning purple. The same applies to IR. You gotta be careful with the effects of...
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    Specific light wavelength causing more photobleaching/light damage than others?

    I have a few different grow lights from sunlight, sansi, spider farmer, viparspectra, and just some regular 6500k T5's. I've noticed that plants photobleach and produce anthocyanin much more easily under some lights than others, despite receiving about the same PPFD. The most noticeable...
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    Homemade oyster shell powder - how well does it work?

    I was planning on using crushed oyster shell powder for my next organic grow. I didn't realize that oyster shell powder means ancient deposits of oyster shells that are mined and then turn into a powder, I thought it just means regular oyster shells crushed to a powder. Now I have 10kg of...
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    PH of compost matter in organic soil growing?

    I was planning on using compost in my upcoming organic soil grow, but I just found out it has a PH of 8. Is that too high, does it even matter?
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