Or_Gro
Well-Known Member
What’s temp and humidity?
Steakbomb's Quantum Closet
- Thread starter Steakbomb
- Start date
Steakbomb
Well-Known Member
RH around 40% and temp around 75°F
Or_Gro
Well-Known Member
With humidity that low your plants can’t handle “normal” ppm...def contributing to compact plants, too long and they will be unable to grow to full potential.. . Check out bottom right plants in each of my smackdown tents...
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Steakbomb
Well-Known Member
Got a 4L right next to the cab - similar device but looks different. 40% is probably close to as high as I can get it. It has likely already been too long - growing in the winter in New England w/o a fully isolated area is a challenge.
Managing RH is gonna be way easier in the new room. The humidifier I'm using now is basically attempting to humidify my entire basement. Won't fit in the cab either....
Or_Gro
Well-Known Member
Run some flexible hvac hose from outlet to cab hole...
Beachwalker
Well-Known Member
Hello and welcome! Love the clean set up, following along 
Steakbomb
Well-Known Member
Thanks friend, and welcome (to my thread)!Hello and welcome! Love the clean set up, following along
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Steakbomb
Well-Known Member
Flip day has arrived. Here is the schedule - I'll add the QB18s to the QB288 time cycle in 2-3wks after they stretch.
Current PPFD at the top of the canopy - will be dialing up soon...
And the plants:
Gonna do some trimming tomorrow to remove a few extra tops & to get ready to tie them down a bit again.
Current PPFD at the top of the canopy - will be dialing up soon...
And the plants:
Gonna do some trimming tomorrow to remove a few extra tops & to get ready to tie them down a bit again.
Or_Gro
Well-Known Member
Lookin good!
If you haven’t, you might want to consider Daily Light Integral (DLI)...
if you have been doing 600ppfd for 18 hrs/day, that is ~39 dli.
If ppfd at flip is anything less than 900, plants will be getting less light than before flip.
https://horticulturelightinggroup.com/blogs/news/converting-ppfd-to-dli
Steakbomb
Well-Known Member
Interesting... I've been doing the 600 for 20hrs - which is 43.2. 900 for 13.5hrs shakes out to 43.74.
I suppose I'll make a small adjustment today - maybe to 700 (the lights did still turn on at 3am), then dial it up to 900 tomorrow.
Or_Gro
Well-Known Member
That’s pretty good dli, this article shows dli by month for US.
https://www.extension.purdue.edu/extmedia/ho/ho-238-w.pdf
I focus on the calif/oregon border, mid- to late-summer, the primo outdoor ganja growing region, at flowering...
https://www.extension.purdue.edu/extmedia/ho/ho-238-w.pdf
I focus on the calif/oregon border, mid- to late-summer, the primo outdoor ganja growing region, at flowering...
Steakbomb
Well-Known Member
Adjustment 1 done. I tried to make the ppfd gain mainly by lowering the light - trying to not go nuts on the wattage yet - although I have found they can pull about 380w at max with this driver. The nice thing about centering the boards over each bucket is the ppfd on each plant is still pretty close.
I'll have to make sure this evening that the pucks provide sufficient coverage at this height.
I'll have to make sure this evening that the pucks provide sufficient coverage at this height.
Steakbomb
Well-Known Member
I'd like to target the 1100ish ppfd you've been doing, but my humidity level challenge may not let me get quite there...
Or_Gro
Well-Known Member
I think pretty soon your plants will be big enuff and growing fast enuff that their transpiration rate will change rh equilibrium...i turned off the humidifier on each tent this morning, hoping to maintain 55-65% rh from transpiration alone, then switch to dehumid...
Steakbomb
Well-Known Member
They're getting there, actually. The 40-45% range I'm in now is an improvement over the 30-40% range I was living with for the last couple months.
Or_Gro
Well-Known Member
From each smackdown tent, no humidifiers since lightsout yesterday:
Two days ago the rh’s w/o humidifiers were in upper 30 to low 40% range...mother nature is amazing...
Who says there’s no such thing as climate change, as we deforest and pump co2 into our global greenhouse...
led1k
Well-Known Member
That link didn't work but found this:
https://horticulturelightinggroup.com/blogs/calculators/converting-ppfd-to-dli
Great info @Or_Gro
Or_Gro
Well-Known Member
Thanks for the good link man.That link didn't work but found this:
https://horticulturelightinggroup.com/blogs/calculators/converting-ppfd-to-dli
Great info @Or_Gro
Steakbomb
Well-Known Member
Far red cycle is confirmed working... @Or_Gro - how is this for coverage on the pucks? Center vs edge readings... enough to do the job?
As much as I really don't want to, I'm considering disconnecting the rails that hold the pucks and spreading them out a few inches more. They are centered between the lids right now as opposed to spread to better cover the 4ft width I think...
As much as I really don't want to, I'm considering disconnecting the rails that hold the pucks and spreading them out a few inches more. They are centered between the lids right now as opposed to spread to better cover the 4ft width I think...