Epic 4x4 Flowering Smackdown : 96 Elites vs 288s

Or_Gro

Or_Gro

Well-Known Member
StickyBudHound said:
Nice buddy! Two humidifiers is probably the only way. I saw a 70 liter industrial humidifier today on Amazon. That one looks similar.
Click to expand...
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.
 
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Or_Gro

Or_Gro

Well-Known Member
StickyBudHound said:
So you've been able to consistently maintain optimal VPD levels in the past?

Lol, I've gotten close once last week.
Click to expand...
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.
 
Or_Gro

Or_Gro

Well-Known Member
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...

5065F094-265D-48D5-8B35-542BA570BB1F.jpeg F722BCC4-8964-4718-8E0A-DF890C0D53E6.jpeg

Corner plants to one tent, circled ones to the other tent:
954D0B15-38B2-44E4-B8D1-92F9FFA309D7.jpeg

@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

StickyBudHound

Well-Known Member
Or_Gro said:
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
Click to expand...
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

Or_Gro

Well-Known Member
StickyBudHound said:
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?
Click to expand...
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:
21328E06-8596-4FB1-B6CF-BCA1F87D3B69.jpeg

Plus two of these per bucket:
4188CE23-7B8C-4D08-ADBF-F79427566087.jpeg

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

StickyBudHound

Well-Known Member
Or_Gro said:
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.
Click to expand...
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

Or_Gro

Well-Known Member
StickyBudHound said:
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.
Click to expand...
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

Or_Gro

Well-Known Member
Or_Gro said:
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
Click to expand...
A couple quick pics of no fun:

59C3A475-BECC-4C39-8F66-C519ED3F6160.jpeg 73A9D6F3-D52D-45F4-9F7E-B22721B8C45D.jpeg
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!
 
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Randomblame

Randomblame

Well-Known Member
Or_Gro said:
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
Click to expand...

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

Or_Gro

Well-Known Member
Randomblame said:
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.
Click to expand...
Thanks,

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

Or_Gro

Well-Known Member
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:
513FC732-00AD-497E-9654-5AB980B3C9D1.jpeg
4A7A83A1-E27C-4EC3-925D-FE1895A1AADB.jpeg
55D24C92-09A7-413E-A85D-DD55BAA4D511.jpeg

8x288s:
32AE098D-D683-43CB-B4E3-9ADA05800D98.jpeg
0C1FAAB1-9D5E-4503-A1E6-097D25553122.jpeg
502BCD4B-F625-44E1-B6E0-8A29681BC36D.jpeg
 
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