Thoughts on Tent Conditions for Vegetative State?

Doing research before I got into growing, there was all sorts of information out there regarding the ideal conditions for growing indoors (tent). I sifted through all of the information and landed in a place that I feel comfortable with, but I would love to hear how you approach this stage.

With that being said, what are your thoughts on temp and humidity for the vegetative phase of cannabis plants? Do you tend to lean towards the cooler end of the temp spectrum (ie 70-74) or the higher end (75-80) during the day cycle? And why? What about during the lights-off period?

What are your thoughts on RH? Obviously lower, since vegetative plants are now forming roots and aren’t dependent on their leaves for moisture - but how low? In the 50s? 60s? What have been your experiences and results?

Thanks in advance for the dialogue and input!

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Welcome, lets start with a support ticket so we can see what we’re working with.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can. If you aew not sure, just bring it to oue attention. We will figure it out.

  1. Indoor or outdoor? - size of grow?
  2. Otigin of seeds?
  3. Regular, feminized, or autoflower?
  4. Origin of water. PH, EC/TDS of source water?
  5. PH and TDS/EC of if mixed solution?
  6. Grow method? Soil, Soil-less, Coco, Hydro, Aquaponics. Please explain.
  7. Nutrients or fertilizer system used.
  8. What typr of lighting are you using? LED, HID (MH, CMH, HPS), or Fluorescents? Please elaborate.
  9. What are the temps in your growspce? Day / Night?
  10. What is the RH = relative humidity in your growspace? Day / Night?
  11. AC, Humidifier, De-humidifier?
  12. Do you have a Ventilation system? Size? 4", 6"?
  13. Co2 Yes / No?
  14. How long have you been growing?
  15. What budget have you set in order to grow successfully?
  16. If you grow hydro, then please explain your hydro method. DWC, R-DWC, Ebb and Flow, Or; Other? Other?

16b. Size and temperature of solution in reservoir?

Always try to upload a clear picture in white light of any issues you may have to allow the community to identify your issue.

Anything you feel would help us give you more informed advice should be included. Feel free to elaborate at the end of the survey.

Hmmm…I was under the impression that forums were for both issues/solutions as well as conversations and dialogue.

Perhaps I was wrong.

Naw you’re right, however we recommend doing the support ticket to help us rule out issues and get a solution :metal:

I’m not looking for a solution - I was just curious about how others approach it.

Had you read my post you’d see that I have my settings dialed in and I wanted to get the thoughts of others on how they manage their grow.

Why? While I am happy with my results, there’s always something more I can learn by listening to others regarding their own experiences and perspectives.

When you’re out to dinner with friends and family, and someone brings up a topic, do you also recommend that they ‘fill out an answer sheet’ before the conversation can commence? WTF…

I think a lot will depend on your growing medium. I grow in hydro so I care more about my water temp than I do my RH or temp.

As long as my water temp is 72 or below, I’m pretty happy. My RH doesn’t get about 50 because my tent is in AC. I also have my exhaust constantly on to control heat since lights generate heat

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Good luck to you, I was simply doing what the moderators on this site ask.

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Cfpdadto3 have you always grown hydro? Or did you grow in soil, previously?

What are the benefits of hydro and does the addition of so much water impact your RH? I’m just curious since I have no clue about hydroponics and what is required to successfully grow.

My first grow was in soil but I had so many bug problems, I said never again.

My humidity has actually been lower in hydro than soil. I believe it’s because everything is covered vs soil which is exposed to the lights and heat.

Here are my targets for all stages not just veg. These are targets and I/we cannot always be perfect, so I get as close as possible.
Seedling - 2 weeks in domed environment at 80% and 80º
Veg - Until I flip - usually around 10 weeks - 60% and 75º
Flower - From the flip until chop usually about 10 weeks - less than 50% and 68º
Here are a few pic’s to rep the info above. All plants are photos.



Hope this helps

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I like to keep it hot and humid from seedling stage all the way through veg. My average temps during lights on are 82 to 84F, and lights off 74 to 77. I keep the humidity really high through the seedling stage, and then at least 65 to 70% all the way through veg, and even into early flower when there’s very little risk for pathogens.

The only reason we lower humidity during flowering is to protect the plants from mold, mildew, bud rot, ect. The plants would still appreciate higher humidity during flowering, we just don’t want to take those risks, so we lower it.

Once the stretch is over, and buds start to really grow, I’ll drop temps down to the upper 70’s for lights on, low 70’s for lights off. Humidity I go lower as the flowering progresses, and by mid flower I try not to let it go above the low 50% range.


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