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Optimal conditions

Rush2112
Rush2112started grow question 4 years ago
My tent is at 75degrees F and around 50% RH...is this ok? What are the optimal temp. And pH for veg? For bloom? Thanks!!
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Nor_Cal_Kannabliss
Nor_Cal_Kannablissanswered grow question 4 years ago
Seedlings and clones like RH levels of 65–80%. Remember, these young, fragile plants have weak root systems. By increasing humidity levels, you’ll allow them to take up more water from the environment and focus on developing strong roots. At this early stage, you’ll want to keep temperature levels at around 25°C during the day, and around 21°C at night (77°F and 70°F, respectively). Vegetative plants, on the other hand, tend to prefer moderate humidity levels. There’s no exact figure to follow here, but you’ll want to stick somewhere between 55–70% depending on the strain. Temperatures should sit between 22–28°C (71–82°F) during the day and roughly 18–24°C (64–75°F) at night. Vegetative plants have strong root systems and will absorb more water from the soil, which is why most growers drop humidity levels slightly during this stage. At the early flowering stage, most growers agree that plants benefit from lower humidity levels. Again, there’s no ideal figure to aim for, but many will stick between 40–50%, occasionally pushing to roughly 55%. You’ll also want to drop temperatures to about 20–26°C (68–78°F). During the late flowering stage, try to drop humidity to about 30–40% and keep temperatures around 18–24°C (64–75°F) during the day, followed by slightly cooler nights (16-20C in the last few nights). Keep pH between 6.0 6.5. Hope this helps! Happy growing.. 👊
chasv77
chasv77answered grow question 4 years ago
If you can keep those numbers fairly consistent throughout your grow, that would save you lots of wonder, about whether you are doing it right. I have never had issues with my high or low humidity levels, but definitely want to stay under 60, during your last few weeks of flower, once those buds get dense. Could my results have been better trying to match all those numbers you have read about, maybe, but what I harvested so far, is OK with me. Good growing!.
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Shagrath
Shagrathanswered grow question 4 years ago
Hi there! You should check out VPD chart for cannabis. It tells you the temp/humidity ratio In many charts it is assumed that leaf temp is 2celsius lower than the atmosphere. Basically in veg 25C 60-75%rh and bloom 25C and 45-60 and the final week or two you can go as low as 30%RH to promote last push of trichomes or so Ive read
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