Over or under?

[Darthweeder]

Hi!

First things first, my setup.

19 days old plants
2 x autocobs
2 x 3 gallon
1 Think different
1 Amnesia Haze (auto)
Biobizz light mix with about 50% perlite.
Humidity 25-70 rh (mostly around 40)
Followed biobizz nute chart

Temps has been between 25-40 Celsius (77-104), the high end of the scale about half the day, since they were planted.

Also used biobizz leaf coat 4 times the last 14 days to battle the heat, sprayed when lights were on though.. (might have burnt them?)
I can't really figure out if they are over or underwatered.
The cobs were at 18 inches from the beginning and now (the last week) has been moved up to about 30 inches. I also turned of a Mars 48 reflector that was on for 8 hours a day in the beginning.

I have been watering about every other/third day.
The soil is dry about half an inch to an inch when I been watering.
The last watering (today, 12 hours ago including 6 hours dark) I gave very little.
And I feel like it doesn't make a difference however I do.
More or less water, they look the same..

 

[namvet25]

Hi!

First things first, my setup.

19 days old plants
2 x autocobs
2 x 3 gallon
1 Think different
1 Amnesia Haze (auto)
Biobizz light mix with about 50% perlite.
Humidity 25-70 rh (mostly around 40)
Followed biobizz nute chart
View attachment 930276 View attachment 930279
Temps has been between 25-40 Celsius (77-104), the high end of the scale about half the day, since they were planted.

Also used biobizz leaf coat 4 times the last 14 days to battle the heat, sprayed when lights were on though.. (might have burnt them?)
I can't really figure out if they are over or underwatered.
The cobs were at 18 inches from the beginning and now (the last week) has been moved up to about 30 inches. I also turned of a Mars 48 reflector that was on for 8 hours a day in the beginning.

I have been watering about every other/third day.
The soil is dry about half an inch to an inch when I been watering.
The last watering (today, 12 hours ago including 6 hours dark) I gave very little.
And I feel like it doesn't make a difference however I do.
More or less water, they look the same..

Temp should be no more than 85 degrees and preferbably between 78 to 80.Lights were too close at 18 inches so that might have stressed them so keep them no closer than 24 inches during veg stage.Also hold off on foliar spray for awhile and also feeding for another week and see if this helps.

 

[Darthweeder]

Yeah will do.
Watered them this morning with pure water no nutes.
And this time I poured the water a bit from the base of the plants around them and not directly at the base as I done before.

Looked at them tonight and at least now they are raising their leafs.

So my guess is a hell of a lot of different things has happened at once here.
Light, heat, to much water and then to little water...

And I was hoping to get at least a 50g per plant, preferably closer to 100 this time around with the new auto cobs from @BigSm0
I guess that might be screwed now.. I hope not of course

 

[namvet25]

Yeah will do.
Watered them this morning with pure water no nutes.
And this time I poured the water a bit from the base of the plants around them and not directly at the base as I done before.

Looked at them tonight and at least now they are raising their leafs.

So my guess is a hell of a lot of different things has happened at once here.
Light, heat, to much water and then to little water...

And I was hoping to get at least a 50g per plant, preferably closer to 100 this time around with the new auto cobs from @BigSm0
I guess that might be screwed now.. I hope not of course

She is still young so don't give up just yet.I f you have any problems later on let me no.

 

[Mike20132]

Yeah will do.
Watered them this morning with pure water no nutes.
And this time I poured the water a bit from the base of the plants around them and not directly at the base as I done before.

Looked at them tonight and at least now they are raising their leafs.

So my guess is a hell of a lot of different things has happened at once here.
Light, heat, to much water and then to little water...

And I was hoping to get at least a 50g per plant, preferably closer to 100 this time around with the new auto cobs from @BigSm0
I guess that might be screwed now.. I hope not of course

Don't overthink things. Just keep 'er going. Every grow is different. Depending on how stable the genetics of your seed are, you might not even see similar results from seeds grown from the same batch.

Get your feeds under control and she'll do all she can for ya.

 

[Waira]

-- that heat is the main problem, and the low RH% that comes with it,.. screws with all kinds of things, especially transpiration; if that shuts down, the whole transportation system of water and nutes grinds to a near halt, and that kicks off a shit-show of potential problems.. them there's the more physical damage from the heat...She looks just plain cooked! You must get those temp's back in range as Nammy said,...no work-around on that....

 

[Darthweeder]

Have managed to lower the temps quite a bit by pulling colder air in with a clip fan that I didn't use and ducting.
My tent usually stayed 10-12 degrees Celsius above the outside temps.
Now I managed to get it down about 5-6 degrees depending on how sunny it is.
And this year my country is having the weirdest summer ever with constant non stop heat and sun.

Had heat of 28-29 degrees outside these last days and my tent was around 36.
And it's only for 3-5 hours and then the temperature start to drop.
Sun going down and so.
Still high but it's the best I can do.

Will get back with pictures in a week or so.

Thanks for all the help!

 

[Darthweeder]

One week later and they seem to look much much better.
The temps are still high some hours a day, but it doesn't seem to effect them, maybe because of the fresh air I'm pulling in?

Amnesia haze

Think different

The last picture is of a couple of damaged leafs. Something I should remove maybe?