The Chronicles of Lola Grows Garden

[Or_Gro]

Thank you

Full blast ( smaller board doesn’t dim)

Temps steady at 82 even with the little board added.

Humidity 53 ( for now)
My portable ac has a built in dehumidifier if I need it later. Inline fan on low.

You’re welcome

Thanks.

My fixtures have the same 8 bds as yours, a little more spread out. In my 4x4 @ 24” ht, full blast is a sweetspot, giving 1000-1400+ppfd across the footprint. Yours should be close to this, except that additional 1’ perimeter (4x4 vs 5x5) would have a dropoff of 200-300 ppfd, but still above 600 (min for good flowering).

Keep an eye on the ones directly under center of light. 1400ppfd for 12 hrs is a daily light integral (dli - light intensity for a lightson period) of 60 (northern cal/so oregon, flowering period dli is 45-50; phoenix, az at noon on a sunny summer day is dli 65). If there is any light damage, you’ll see it there first.

Is there any way you could bump humidity to 60-65% thru stretch (1st 3 weeks)? Would be safe, infection-wise, with fans on; and lower stress as they stretch and transition to flowering.

 

[INF Flux]

I guess to sum up what people have experienced with leds, and my own grows have shown this, is that the ir put out by traditional bulbs and heats up the leaves beyond the air temps. So under LED the plant feels as though it's cooler. 60-65% seems to be working well for me. I'm sure others can maybe chime in on where they are at.

Edit: What Or Gro said.

 

[Lola Grows]

Thanks.

My fixtures have the same 8 bds as yours, a little more spread out. In my 4x4 @ 24” ht, full blast is a sweetspot, giving 1000-1400+ppfd across the footprint. Yours should be close to this, except that additional 1’ perimeter (4x4 vs 5x5) would have a dropoff of 200-300 ppfd, but still above 600 (min for good flowering).

Keep an eye on the ones directly under center of light. 1400ppfd for 12 hrs is a daily light integral (dli - light intensity for a lightson period) of 60 (northern cal/so oregon, flowering period dli is 45-50; phoenix, az at noon on a sunny summer day is dli 65). If there is any light damage, you’ll see it there first.

Is there any way you could bump humidity to 60-65% thru stretch (1st 3 weeks)? Would be safe, infection-wise, with fans on; and lower stress as they stretch and transition to flowering.

Would closing the vents be ok? Or turning inline off? Just went in humidity at 51 I just closed one of the windows so temp goes up to 82 Real time pic

 

[Or_Gro]

might want to up the humidity. Just read this great thing about vpd, wish I could remember the link. I'll drop it here if it comes to me where I saw it.
And..... I got it. I think, was pretty faded last night lol.
http://www.just4growers.com/stream/temperature-humidity-and-c02/vapor-pressure-deficit-the-hidden-force-on-your-plants.aspx

Good article, i think that up to 26-27ish C the humidities work fine, but i have concerns about the need for humidities near/above 70% as temp increases to 30 (86F).

 

[INF Flux]

 

[Or_Gro]

Would closing the vents be ok? Or turning inline off? Just went in humidity at 51 I just closed one of the windows so temp goes up to 82 View attachment 4198782Real time pic

I’d hesitate closing incoming air, you’re really better off letting your exhaust fan/filter recycle the air (old out/new in).

Having a variable speed or temp/humidity controller on your fan would allow you to lock in a temp/humidity range.

 

[INF Flux]

with that temp, looks like 65 is upper of whats recommended, but Or might be on to something running a bit higher. I'm still learning.

 

[Or_Gro]

with that temp, looks like 65 is upper of whats recommended, but Or might be on to something running a bit higher. I'm still learning.

I wouldn’t go higher than 60-65% during stretch, and i’d back it down to 55-58 for wk 5 & 6...lowering a couple more times ending 40-45%ish, but just follow the chart

 

[Or_Gro]

I’d hesitate closing incoming air, you’re really better off letting your exhaust fan/filter recycle the air (old out/new in).

Having a variable speed or temp/humidity controller on your fan would allow you to lock in a temp/humidity range.

If you cant get humidity up, you may be better off going closer to temp that matches what your ambient rh is.

 

[Lola Grows]

I’d hesitate closing incoming air, you’re really better off letting your exhaust fan/filter recycle the air (old out/new in).

Having a variable speed or temp/humidity controller on your fan would allow you to lock in a temp/humidity range.

I have one (active air) it’s on low , not the lowest I just turned it all the way down.

 

[INF Flux]

I use one of these in a bucket when I want the humidity up in the curing room. Made a little float for it to sit in. Perhaps something like that on a digital timer that you can keep mostly off? I'm sure you could get a similar thing that would be nicer, I tend to shop for cheap.
https://www.amazon.com/AGPTEK®-Original-Fountain-Atomizer-Humidifier/dp/B00PAJXROW/ref=sr_1_7?ie=UTF8&qid=1536972650&sr=8-7&keywords=pond+mister+fogger

 

[Or_Gro]

According to chart:

During stretch (early flowering), you want to have a vpd of 0.8-1.2 (the darker yellow band)

At 28C (82F), for darker yellow band: rh range 57.5%-67.5%.

If you can only get to 50% rh, temp should be closer to 24-25C (75-77F).

You can bump temp/decrease humidity as flowering progresses cuz the target vpd increases from 1.2 to 1.6 (lighter yellow range).

 

[Lola Grows]

According to chart:

During stretch (early flowering), you want to have a vpd of 0.8-1.2 (the darker yellow band)

At 28C (82F), for darker yellow band: rh range 57.5%-67.5%.

If you can only get to 50% rh, temp should be closer to 24-25C (75-77F).

You can bump temp/decrease humidity as flowering progresses cuz the target vpd increases from 1.2 to 1.6 (lighter yellow range).

Ok, I can definitely lower temps to that range. Thank you

 

[Or_Gro]

Ok, I can definitely lower temps to that range. Thank you

See how it goes...it won’t hurt them...watch how this one reacts:



bet those leaves go from hangdog to worship mode.

 

[Lola Grows]

See how it goes...it won’t hurt them...watch how this one reacts:

View attachment 4198860

bet those leaves go from hangdog to worship mode.

Ok A million thanks. I’ll post a close up of it tomorrow after temps steady at 77 .

 

[INF Flux]

and perhaps even a glass of water inside the tent? I also tend to overthink

 

[Lola Grows]

and perhaps even a glass of water inside the tent? I also tend to overthink

I’ll give it a try .

 

[Lola Grows]

Day 3 pics at 4:58 pm lights out at 5:00 pm

I was advised to get my temps down to 77 to match my 50/55 humidity.

Temps 77 humidity 50 51 , hopefully I can get it up to 60ish and raise temps back to 82.

Added a small humidifier to the room ( not tent ) may not make much difference.

 

[Lola Grows]

Won’t hurt even if it doesn’t help. I’ll know at 5:00 pm today I’ll sit it near a open vent .

 

[Lola Grows]

Day 3 before lights out