Electric sky 300 stress

M

Maineconnect

Active Member
Temps are raised. I wonder if I should boost light back to 50 percent.
Also grabbed mag sulfate considering doing a foliar spray this evening
 
Rocket Soul

Rocket Soul

Well-Known Member

There are many vpd charts and resources, this one lets do +- degrees of leaf temps so you can get a hang for the difference between hot hid lights and colder led lights. Vpd is not the only factor so instead of following the numbers blindly just use it for getting a feel for which direction to take your environment when you get calmaggy defs, bleaching coupled with poor plant stance.
 
M

Maineconnect

Active Member
Rocket Soul said:

There are many vpd charts and resources, this one lets do +- degrees of leaf temps so you can get a hang for the difference between hot hid lights and colder led lights. Vpd is not the only factor so instead of following the numbers blindly just use it for getting a feel for which direction to take your environment when you get calmaggy defs, bleaching coupled with poor plant stance.
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Right on. Everest is the fucken man. I’ve watched his vpd videos over and over as well as all of his videos.
great shit
I’ll have to revisit them as well as do research on what kinda ofvpd leds like
 
M

Maineconnect

Active Member
Rocket Soul said:

There are many vpd charts and resources, this one lets do +- degrees of leaf temps so you can get a hang for the difference between hot hid lights and colder led lights. Vpd is not the only factor so instead of following the numbers blindly just use it for getting a feel for which direction to take your environment when you get calmaggy defs, bleaching coupled with poor plant stance.
Click to expand...
Wait why would a plant grown under an led require a different vpd than hid
 
M

Maineconnect

Active Member
Maineconnect said:
Right on. Everest is the fucken man. I’ve watched his vpd videos over and over as well as all of his videos.
great shit
I’ll have to revisit them as well as do research on what kinda ofvpd leds like
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Aren’t all VPD measurements kinda created equal meaning if I’m running 1.3 kilo pascal in and led set up and 1.3 in an bid set up shouldn’t my leaf temp and rh be the same in both scenarios to get that 1.3
 
M

Maineconnect

Active Member
Rocket Soul said:

There are many vpd charts and resources, this one lets do +- degrees of leaf temps so you can get a hang for the difference between hot hid lights and colder led lights. Vpd is not the only factor so instead of following the numbers blindly just use it for getting a feel for which direction to take your environment when you get calmaggy defs, bleaching coupled with poor plant stance.
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81 degrees at 56 percent humidity and I have a 1.2 vpd. That should be solid for my 8 week old 5 gallon containers. I’ve floated high 70,s 80 max at 50-60 percent humidity and vpd doesn’t fluctuate all that much.
I’m feeling like my environment has been solid and .that I’m fucken up elsewhere to see this.
I am adding 6 inch intake at bottom of closet keeping an eye on vpd continuing forward while raising my temps.... I’m at the store now for radar gun....
I think I fucked up my watering and nutrition lmao
I’ve got a watering coming up and I’m leaning on moving forward with camg every watering Epsom foliar here and there and I’ll be flipping hopefully in a week...
 
Rocket Soul

Rocket Soul

Well-Known Member
Led grown plants tend to have a little lower temps than ambient (-1?) and hps grown 2-3 over ambient. Check the graphics of vpd i posted, look around for the + - leaf temp box where you can change accordingly. The fact that hps leaves are hotter means they almost never need help to transpire. Led does at least on the higher lightlevels we use. Also the less blue in you spectrum the less stomata aperture. Its complicated to dial it in all thru theory, but vpd will be able to give you which direction to take your environment when you see bad stance/not praying enough coupled with defs. In your case your plants looked at least decently happy w regards to leaves being erect, some mag nute or foliar should work well. But im no foliar expert.
 
M

Maineconnect

Active Member
Rocket Soul said:
Led grown plants tend to have a little lower temps than ambient (-1?) and hps grown 2-3 over ambient. Check the graphics of vpd i posted, look around for the + - leaf temp box where you can change accordingly. The fact that hps leaves are hotter means they almost never need help to transpire. Led does at least on the higher lightlevels we use. Also the less blue in you spectrum the less stomata aperture. Its complicated to dial it in all thru theory, but vpd will be able to give you which direction to take your environment when you see bad stance/not praying enough coupled with defs. In your case your plants looked at least decently happy w regards to leaves being erect, some mag nute or foliar should work well. But im no foliar expert.
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Thanks a lot man what your saying makes a lot of sense and is not falling on def earsZ
My temps are at levels I haven’t exceeded in the last 8 weeks because I believe what you’re saying and I’m trying to understand it.
 
M

Maineconnect

Active Member
Rocket Soul said:
Led grown plants tend to have a little lower temps than ambient (-1?) and hps grown 2-3 over ambient. Check the graphics of vpd i posted, look around for the + - leaf temp box where you can change accordingly. The fact that hps leaves are hotter means they almost never need help to transpire. Led does at least on the higher lightlevels we use. Also the less blue in you spectrum the less stomata aperture. Its complicated to dial it in all thru theory, but vpd will be able to give you which direction to take your environment when you see bad stance/not praying enough coupled with defs. In your case your plants looked at least decently happy w regards to leaves being erect, some mag nute or foliar should work well. But im no foliar expert.
Click to expand...
Just took the thermo gun to my canopy ambient canopy temp 78 leaf surface 74!!!!!!
My vpd is not as strong as I’ve thought........
 
hybridway2

hybridway2

Amare Shill
Maineconnect said:
I’ve gotten good at providing info fast let’s go,
2x4x8 ft closet grow.
Strain: purple Afghan Kush by Dina fem
From clone we are probably 10 weeks old.
closet has 180 cfm fan secured to the top of closet door. There is no intake.
Plants spent roughly 9 weeks under 96 wats of t5
A week ago I dropped the serious sunshine on them that being the electric sky 300 v2 at 50% at 3.5 ft from canopy.
Things went well for a few days and growth did explode a tad.
then I saw what you see in the photos.
I thought it was magnesium and I saw a little calcium as welll so I hit them on there last water with 350 ppm camg Botanicare.
This was 2 days ago and the plants will be coming up for a watering tomorow.
Since there last watering nothing has progressed negatively.
opinions of all kinds appreciated this is my first time growing with an led of substanc
first 2 weeks in peat plugs
Next 6 weeks in 1 gallon roots organic originalonce the 1 gals were filled they went into 5 gallon containers w/ coast of Maine growers mix. all the while receiving ewc teas here and there as well as regular pro tech silica splash of super thrive here and there as well as coconut water and aloe Vera.

great white inoculation for each transplant as well as a few compost ewc great white too dresses in the 1 gal.
Ph 6.3-6.7

first three photos are today
Second photos are when I spotted the light stress or deficiency or yet to be detirmened

I will note it seems to be very local as far as it just effecting one section of one plant ... could mean the others aren’t far behind.

no stress in all blessin hope everyone’s having a great Monday!
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Are you sure you don't have spider mites?
 
hybridway2

hybridway2

Amare Shill
Moflow said:
A tablespoon per US gallon.
Mix the dose in a small amount of warm water to dissolve the crystals first, say a pint then stir it into the rest of the gallon and water plants.
I just chuck a sprinkle or 3 of Epsom into my soil when transplanting, nothing scientific lol
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A tablespoon is some serious ppms.
 
hybridway2

hybridway2

Amare Shill
Gond00s said:
also how much do u add to a gall because I don't really have a solid measurement would like to know what u do I just don't wanna go and nuke my soil with Epsonsalts
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1-5 ml.
I usually use about 2ml/gall. With my normal feed, every other watering.
If in need, then 5ml/gall but i back up on base nutes a little. Just watch your ppms is all. If you feel you have rich enough soil then maybe go 4-5ml/gall. Once with your water or tea.
Dissolve in hot water like stated above.
 
M

Maineconnect

Active Member
hybridway2 said:
1-5 ml.
I usually use about 2ml/gall. With my normal feed, every other watering.
If in need, then 5ml/gall but i back up on base nutes a little. Just watch your ppms is all. If you feel you have rich enough soil then maybe go 4-5ml/gall. Once with your water or tea.
Dissolve in hot water like stated above.
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1-5 ml of Epsom salt?
 
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