Extreme Flowering Under Pair of Timber 48SAMS
- Thread starter Or_Gro
- Start date
Or_Gro
Well-Known Member
Keep us updated here or your thread
mr. childs
Well-Known Member
try a freezer cure once...
SMT69
Well-Known Member
Indeed...! opposite for me I just can’t keep in the green on the vpd chart at higher temps, its been impossible so far to raise humidity running ac.
Im betting different strains, sativas versus indicas play a role as they originally came from diff enviros. More variables
Or_Gro
Well-Known Member
On both plants and cure, it’s not always intuitive. Theoretically cooler air holds less moisture (so could dry faster) and vice versa, but lots of variables (trigger points, exhaust fan/dehumid rates, airflow, sensor quality, temp/humid stratification, etc.).
I’m currently backing down rh as transpiration increases in mid-flower (currently aiming for 1.3 on http://www.just4growers.com/media/23631/vpd_2degree.gif), not straightforward - and i’m using digital controllers.
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Or_Gro
Well-Known Member
In the spirit of the name of this thread, let’s see what these lights can do. Front 2 girls stripped extremely:
Scares the bejesus out of me, but plenty of microleafage if they and the lights are up to it.
Will decide what to do on other two based on how these look in next day or two.
Scares the bejesus out of me, but plenty of microleafage if they and the lights are up to it.
Will decide what to do on other two based on how these look in next day or two.
Or_Gro
Well-Known Member
Lol, Just enuff wire to be dangerous...
We’ll see if i stunted them, probably did, but had to push it with these lights, maybe they will surprize...
Randomblame
Well-Known Member
Or_Gro
Well-Known Member
Day 34 of ?84?: Not dead yet, they seem to be praying - for mercy?
Decided to hold off on increasing uva-b for a few days.
Ppfd ~1050, backed down exhaust fan trigger to 58 percent rh (cycling between 52 and 58, targeting 1.3 for mid-flower based on http://www.just4growers.com/media/23637/vpd_1degree.gif). All other controlled variables in range.
Decided to hold off on increasing uva-b for a few days.
Ppfd ~1050, backed down exhaust fan trigger to 58 percent rh (cycling between 52 and 58, targeting 1.3 for mid-flower based on http://www.just4growers.com/media/23637/vpd_1degree.gif). All other controlled variables in range.
Or_Gro
Well-Known Member
Day 35 of ?84?: Plants adding trichs at boosted rate but uv doing damage, even after backing off to 1 hour exposure. especially on “diesels” and defols.
Look at those trichs (less than 1 week since became apparent), but also look at pistil and leaf damage. Also, appears that uv has an amazing penetration capability, cuz seeing similar (somewhat lighter) damage all the way down to bottom leaves/flowers.
Shutting off uv, for now, for two reasons: gotta reduce stress on defols until they recover; hate flying blind, uv meter on its way.
Despite uv damage, plants transpiring at same rate (higher for undefols), topped with runrate water levels this morning.
Ppfd ~1050, all controlled variables in range.
Look at those trichs (less than 1 week since became apparent), but also look at pistil and leaf damage. Also, appears that uv has an amazing penetration capability, cuz seeing similar (somewhat lighter) damage all the way down to bottom leaves/flowers.
Shutting off uv, for now, for two reasons: gotta reduce stress on defols until they recover; hate flying blind, uv meter on its way.
Despite uv damage, plants transpiring at same rate (higher for undefols), topped with runrate water levels this morning.
Ppfd ~1050, all controlled variables in range.
Randomblame
Well-Known Member
I would not turn it completely off. They need to get used to it. When the "switch to defense mode" is done they should grow normal again. Maybe with only 15 mins a day or even farther away until they bounce back.
Or_Gro
Well-Known Member
Thanks, i appreciate your comments, keep em coming.
If i hadn’t extremely defol’d, your approach would be my way. But the defols only have juvenile leaves, and the plants have obviously committed to reproduction (not in foliage generation mode anymore,). So the recovery of these plants gets priority.
Next time i’ll have some quantitative measures to index against.
I understand i will have to go through this again.
Make sense?
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Randomblame
Well-Known Member
Yeah, maybe you start next time earlier in veg to give them enough time to get used to it. This way you would not see such irritations and in bloom they can withstand a higher UVB dose easily. It's like when you put a young seedling from an indoor enviroment to outdoors in summer. They need a few days in the shade to fully acclimate to sun light.
440μW/cm² and more is typically found in 2000m above 0; around mexico city for instance.
The shit is that it's already so late that there is no vegetative growth anymore. Maybe mount the bulb directly under the ceiling so that the most of the UV is absorbed before it hits the plant.
440μW/cm² and more is typically found in 2000m above 0; around mexico city for instance.
The shit is that it's already so late that there is no vegetative growth anymore. Maybe mount the bulb directly under the ceiling so that the most of the UV is absorbed before it hits the plant.
Or_Gro
Well-Known Member
mr. childs
Well-Known Member
i told you i have fried plants before, and i have the 2ft bulb. that is why starting from veg is best, introducing only in flower freaks them out, as if you placed them outside under the big hid. i need to find out the numerical amount of uv on the index that is rated as "too high". but like @Randomblame said "keep going", although some others dont believe in using uvb, i know it works, it works scarily good in fact, but it will age a plant fast. i also never defoliate when using it in flower, no fan leaves to protect the buds, and soak up the radiation.
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Or_Gro
Well-Known Member
Oh it works, a week ago no trichs, they started coming in, turned on uv and bam, into overdrive.
Yep, this whole grow is about finding limits. I’m finding them, and have - 1/3 in - found plenty for improvement in future grows. And, learned plenty from guys like you and RB. Couldn’t be happier, even if everything were perfect (and didn’t learn anything).
As for no defol w uv, i agree w “less defol”, the uv gets in deep even with cover, but i have big pm risk in my location and with such thick foliage in such a tight space, that would keep me up at night....
mr. childs
Well-Known Member
what about using the pure par veg bulb from htg/agro ?
http://growagromax.com/products/4ft-pure-series/
Or_Gro
Well-Known Member
I’ll check out...hoping to dial in uv when i get meter, arriving tomorrow.
mr. childs
Well-Known Member
pick up a 2ft pure uv, the 2ft reflector comes with a 6500k bulb also.
https://www.htgsupply.com/products/agromax-pure-uv-t5-bulb-2-foot
or use this instead of the pure uv 4ft https://www.htgsupply.com/products/agromax-pureveg-plus-uv-t5-bulbs-4-foot
https://www.htgsupply.com/products/growbright-2-foot-1-lamp-high-output-t5
https://www.htgsupply.com/products/agromax-pure-uv-t5-bulb-2-foot
or use this instead of the pure uv 4ft https://www.htgsupply.com/products/agromax-pureveg-plus-uv-t5-bulbs-4-foot
https://www.htgsupply.com/products/growbright-2-foot-1-lamp-high-output-t5