Epic 4x4 Flowering Smackdown : 96 Elites vs 288s

[Or_Gro]

Nice buddy! Two humidifiers is probably the only way. I saw a 70 liter industrial humidifier today on Amazon. That one looks similar.

I have a dehumi for each tent, jic...

hopefully this will only be an issue for next few weeks...but now i will have no excuse for out of range vpd...something i have learned the hard way can bite hard...prob delayed veg a week on the smackdiwn girls

...but, they’re cookin now....w gas...at least an inch today....maybe 2+ w overnight extension.

 

[StickyBudHound]

So you've been able to consistently maintain optimal VPD levels in the past?

Lol, I've gotten close once last week.

 

[Or_Gro]

So you've been able to consistently maintain optimal VPD levels in the past?

Lol, I've gotten close once last week.

Not on the too low rh side, but no excuse now...

Yes, on the too high side...

it’s all about priorities for your conditions...high rh/powdery mildew was a top priority for me; low rh/slow growth became a priority this time cuz of plants reaction to nutes.

 

[Brock_Fawkin_Samson]

Looking good! Excited to see this battle match go down!

 

[Or_Gro]

Day 50: Later today they move to flowering tents for a few days of acclimation, defol, and nuteswap. 12:12 begins as soon as controlled variables are dialed-in...



Corner plants to one tent, circled ones to the other tent:


@Randomblame and i have been working on a uvb protocol. Reptile lights do not hit the proper wavelength (286nm) for optimal uvb signalling. The agromax t-5s do hit the proper wavelength, but are too intense without dimmable t-5 ballasts. We both will be wiring up balasts and continuing testing, but i have decided not to use uva/b for this grow.

Here are the controlled variables in this grow, and the initial 12:12 targets.

Main Lights:
Starting at 12:12
Intensity ramping to 1000ppfd
Lightson 12 hrs

Emerson Lights:
Starting when 1st pistil balls form on tips
Same lightson as main lights

Initiator Far Red Lights:
Starting when 1st pistil balls form on tips
Turn on for 1st 15 minutes of lightsoff

UVA/B Lights:
Cancelled

Vapor Pressure Deficit (VPD):
Air temp 12:12 to pistil balls 78F
Air temp after pistil balls form 83F

RH 12:12 to pistil balls 60%
RH after pistil balls form 52.5%

Deep Water Culture (DWC):
Water Temp 68F
pH 6.1
EC ramping to 1.5
Oxygen (O2) as close to 10ppm as possible w existing equip

Carbon Dioxide (CO2):
12:12 to pistil balls 800ppm
After pistil balls form 1500ppm

 

[StickyBudHound]

Day 50: Later today they move to flowering tents for a few days of acclimation, defol, and nuteswap. 12:12 begins as soon as controlled variables are dialed-in...

View attachment 4291207 View attachment 4291208

Corner plants to one tent, circled ones to the other tent:
View attachment 4291211

@Randomblame and i have been working on a uvb protocol. Reptile lights do not hit the proper wavelength (286nm) for optimal uvb signalling. The agromax t-5s do hit the proper wavelength, but are too intense without dimmable t-5 ballasts. We both will be wiring up balasts and continuing testing, but i have decided not to use uva/b for this grow.

Here are the controlled variables in this grow, and the initial 12:12 targets.

Main Lights:
Starting at 12:12
Intensity ramping to 1000ppfd
Lightson 12 hrs

Emerson Lights:
Starting when 1st pistil balls form on tips
Same lightson as main lights

Initiator Far Red Lights:
Starting when 1st pistil balls form on tips
Turn on for 1st 15 minutes of lightsoff

UVA/B Lights:
Cancelled

Vapor Pressure Deficit (VPD):
Air temp 12:12 to pistil balls 78F
Air temp after pistil balls form 83F

RH 12:12 to pistil balls 60%
RH after pistil balls form 52.5%

Deep Water Culture (DWC):
Water Temp 68F
pH 6.1
EC ramping to 1.5
Oxygen (O2) as close to 10ppm as possible w existing equip

Carbon Dioxide (CO2):
12:12 to pistil balls 800ppm
After pistil balls form 1500ppm

I like the detail level you provide. There's just no way I could miss this grow! Those girls look literally perfect.

O2 at 10ppm, nice! Raised it up a bit from the expected 9.1% at 68° somehow or that's just the level you get automatically? How do you like that meter now that you've had it this long?

 

[Or_Gro]

I like the detail level you provide. There's just no way I could miss this grow! Those girls look literally perfect.

O2 at 10ppm, nice! Raised it up a bit from the expected 9.1% at 68° somehow or that's just the level you get automatically? How do you like that meter now that you've had it this long?

Thanks man!

Thought that o2 ppm would get your attention. The 10ppm is from one of the docs we reviewed, optimal number for “plants”, i am not aware of a specific number for cannabis.

I haven’t fired up my dissolved oxygen (DO) meter yet, so i don’t know if the initial target is achievable. I def won’t be adding compressed O2 this time; but will be doing full pump pressure using one of these for each 4-bucket tent:


Plus two of these per bucket:


Whatever ppm they provide, will be what the target becomes.

 

[StickyBudHound]

Thanks man!

Thought that o2 ppm would get your attention. The 10ppm is from one of the docs we reviewed, optimal number for “plants”, i am not aware of a specific number for cannabis.

I haven’t fired up my dissolved oxygen (DO) meter yet, so i don’t know if the initial target is achievable. I def won’t be adding compressed O2 this time; but will be doing full pump pressure using one of these for each 4-bucket tent:
View attachment 4291243

Plus two of these per bucket:
View attachment 4291245

Whatever ppm they provide, will be what the target becomes.

O2 ppm isn't the same as dissolved oxygen percentage, is it? Is the ppm what you're seeing from the air stone added in there?

I'm stopping at HD on the way home today to pick up the 1" PVC bulkhead connector for the DO aerator system today. It's the last piece of the puzzle I wasn't able to get in the podunk town stores. I should be able to get it all put together this weekend. I'll have to measure with my O2 meter later when I can get one.

 

[Or_Gro]

O2 ppm isn't the same as dissolved oxygen percentage, is it? Is the ppm what you're seeing from the air stone added in there?

I'm stopping at HD on the way home today to pick up the 1" PVC bulkhead connector for the DO aerator system today. It's the last piece of the puzzle I wasn't able to get in the podunk town stores. I should be able to get it all put together this weekend. I'll have to measure with my O2 meter later when I can get one.

O2 is just shorthand for stable form of oxygen molecule, dissolved oxygen is a measure of O2 concentration in a solution.

Will be interested to see what you get when still, and how much you can boost it with vortex.

I’ll get to mine after the girls are stable and in range on other variables.

 

[StickyBudHound]

O2 is just shorthand for stable form of oxygen molecule, dissolved oxygen is a measure of O2 concentration in a solution.

Will be interested to see what you get when still, and how much you can boost it with vortex.

I’ll get to mine after the girls are stable and in range on other variables.

 

[Or_Gro]

View attachment 4291254

 

[StickyBudHound]

View attachment 4291270

Psychedelic! Makes me want to walk a cow field in search of these!

 

[Or_Gro]

Psychedelic! Makes me want to walk a cow field in search of these!

View attachment 4291283

Just grow em...you’ll learn a shipload about humidity control...

 

[StickyBudHound]

Just grow em...you’ll learn a shipload about humidity control...

It's on the list but, was planning on chanterelle shrooms. Lol, I'm sure I could make room for these too, I guess.

 

[Or_Gro]

It's on the list but, was planning on chanterelle shrooms. Lol, I'm sure I could make room for these too, I guess.

Can’t diss chanterelles...cubensis is fairly easy...

 

[Or_Gro]

Day 50: Later today they move to flowering tents for a few days of acclimation, defol, and nuteswap. 12:12 begins as soon as controlled variables are dialed-in...

View attachment 4291207 View attachment 4291208

Corner plants to one tent, circled ones to the other tent:
View attachment 4291211

@Randomblame and i have been working on a uvb protocol. Reptile lights do not hit the proper wavelength (286nm) for optimal uvb signalling. The agromax t-5s do hit the proper wavelength, but are too intense without dimmable t-5 ballasts. We both will be wiring up balasts and continuing testing, but i have decided not to use uva/b for this grow.

Here are the controlled variables in this grow, and the initial 12:12 targets.

Main Lights:
Starting at 12:12
Intensity ramping to 1000ppfd
Lightson 12 hrs

Emerson Lights:
Starting when 1st pistil balls form on tips
Same lightson as main lights

Initiator Far Red Lights:
Starting when 1st pistil balls form on tips
Turn on for 1st 15 minutes of lightsoff

UVA/B Lights:
Cancelled

Vapor Pressure Deficit (VPD):
Air temp 12:12 to pistil balls 78F
Air temp after pistil balls form 83F

RH 12:12 to pistil balls 60%
RH after pistil balls form 52.5%

Deep Water Culture (DWC):
Water Temp 68F
pH 6.1
EC ramping to 1.5
Oxygen (O2) as close to 10ppm as possible w existing equip

Carbon Dioxide (CO2):
12:12 to pistil balls 800ppm
After pistil balls form 1500ppm

A couple quick pics of no fun:


Both tents, clockwise from front left: Jack Herer, Trainwreck, Original Glue (GG4), Green Crack

More to do, but they have bubbles, light, and reasonable vpd.

I need a dab...or three!

 

[Randomblame]

Day 50: Later today they move to flowering tents for a few days of acclimation, defol, and nuteswap. 12:12 begins as soon as controlled variables are dialed-in...

View attachment 4291207 View attachment 4291208

Corner plants to one tent, circled ones to the other tent:
View attachment 4291211

@Randomblame and i have been working on a uvb protocol. Reptile lights do not hit the proper wavelength (286nm) for optimal uvb signalling. The agromax t-5s do hit the proper wavelength, but are too intense without dimmable t-5 ballasts. We both will be wiring up balasts and continuing testing, but i have decided not to use uva/b for this grow.

Here are the controlled variables in this grow, and the initial 12:12 targets.

Main Lights:
Starting at 12:12
Intensity ramping to 1000ppfd
Lightson 12 hrs

Emerson Lights:
Starting when 1st pistil balls form on tips
Same lightson as main lights

Initiator Far Red Lights:
Starting when 1st pistil balls form on tips
Turn on for 1st 15 minutes of lightsoff

UVA/B Lights:
Cancelled

Vapor Pressure Deficit (VPD):
Air temp 12:12 to pistil balls 78F
Air temp after pistil balls form 83F

RH 12:12 to pistil balls 60%
RH after pistil balls form 52.5%

Deep Water Culture (DWC):
Water Temp 68F
pH 6.1
EC ramping to 1.5
Oxygen (O2) as close to 10ppm as possible w existing equip

Carbon Dioxide (CO2):
12:12 to pistil balls 800ppm
After pistil balls form 1500ppm

I have a good news for you.
You don't need exactly 285nm it works with 290-300nm too. It only takes longer to cause the same reaction. For this reason it works with the reptile bulbs otherwise they would have no effect.

1h with 150μW/cm² is the same like 10h with only 15μW/cm². More energy comsuming, yes, but you can still add it and with reptile bulbs you don't have to worry about burnings or stress. My plants always loved the blueish Arcadia bulb spectrum and have prayed harder than I've ever seen it before without showing signs of stress.
Even with 8-10" from the tops and 10h the day not a single issue worth to mention besides a little heatstress. But it was really only a tiny little bit curling on the leaf margins of the highest leaf pair, nothin to worry about. And with your usually used intensity you use anyway more distance so IMO there is absolute no reason why you shouldn't use them.
Believe me, the effect is the same. It only takes more electricity.

 

[Or_Gro]

I have a good news for you.
You don't need exactly 285nm it works with 290-300nm too. It only takes longer to cause the same reaction. For this reason it works with the reptile bulbs otherwise they would have no effect.

1h with 150μW/cm² is the same like 10h with only 15μW/cm². More energy comsuming, yes, but you can still add it and with reptile bulbs you don't have to worry about burnings or stress. My plants always loved the blueish Arcadia bulb spectrum and have prayed harder than I've ever seen it before without showing signs of stress.
Even with 8-10" from the tops and 10h the day not a single issue worth to mention besides a little heatstress. But it was really only a tiny little bit curling on the leaf margins of the highest leaf pair, nothin to worry about. And with your usually used intensity you use anyway more distance so IMO there is absolute no reason why you shouldn't use them.
Believe me, the effect is the same. It only takes more electricity.

Thanks,

I’ll order the 48inchers, test for intensity, and we can discuss lightson period based on intensity results....

 

[Or_Gro]

Day 51: No complaints from the girls. Focusing on getting air temp and rh up to target, the most difficult targets to get aligned.

Lights set at same height, ~ 20-22” above tops; ~725 ppfd; 96s running about 500w at wall, 288s running about 400w at wall.

6x96s:




8x288s:

 

[Ibn Vapin]

View attachment 4291270

Damn good thing I didn't look at this while blazed out of my mind. Might have never heard from me again