Leaves curling on top during flower. Help!

[SOURD777]

This is a Jock Horror plant thats been 4~5 weeks in vegging and 2 weeks into sexing.
It was topped and has 4 long tops which is starting to form buds.

Its in a 4x4 tent with 600w HPS.

Was using fox farm trio nutes and just started using Open seseme and Beastie blooms as well at 1/4 Teaspooon.

The top leaves started curing after i repotted into a 3 gal pot from a 6 inch pot.

Light is about 10~12 inches away and temps are at 70~75 lights out and 85~90f lights on and hand feels comfortable.

Every other plant in flowering tent is doing good but this is the biggest/oldest plant and it started doing this.

So any help would be much thankful.

This plant has barley any FANLEAVES. Most look like small bud leaves and is very sativa dominent i think.

HELP PLEASE WHATS WRONG WITH MY PLANT WHAT SHOULD I DO!

 

[c5rftw]

massive heat stress... this looks like its gonna be tough for you to fix too man.. sorry bro.. vent vent vent... then vent some more... you want 75 with the lights ON with that small area

 

[SOURD777]

CRAP! Is that why im getting so many males too. Other plants seem to be fine but only this is all fucked up but this is the tallest plant to the light... DAMM i didnt put the vent on since i thought lights off at 65f is too cold...

 

[terrorizer805]

This is a Jock Horror plant thats been 4~5 weeks in vegging and 2 weeks into sexing.
It was topped and has 4 long tops which is starting to form buds.

Its in a 4x4 tent with 600w HPS.

Was using fox farm trio nutes and just started using Open seseme and Beastie blooms as well at 1/4 Teaspooon.

The top leaves started curing after i repotted into a 3 gal pot from a 6 inch pot.

Light is about 10~12 inches away and temps are at 70~75 lights out and 85~90f lights on and hand feels comfortable.

Every other plant in flowering tent is doing good but this is the biggest/oldest plant and it started doing this.

So any help would be much thankful.

This plant has barley any FANLEAVES. Most look like small bud leaves and is very sativa dominent i think.

HELP PLEASE WHATS WRONG WITH MY PLANT WHAT SHOULD I DO!

Those plants are suffering with 90 degree heat, you desperatley need to control your temps they should be around 76 or cooler although they can tolerate 80 but never 90 that's too much heat. looks like they can come back just drop your temps and they should rise back up, Good luck.

 

[c5rftw]

looks like they can come back just drop your temps and they should rise back up, Good luck.

yah and you'll be surprised how fast they grow once they get that temp right... Im am surprised as hell they grew that tall when you can see that the "heat barrier" was hit about a foot or more beneath the top... what a strain

when i first was growing, this was my biggest problem.. forget what strain it was but they just STOPPED growing and the leaves were not only curling but BURNING... Your plants are stunted and wont fully recover but the sooner you correct this problem... the more bud you will have...

as far as having so many males... I have never had a male and i had very hot plants, that previous grow i was telling you about, no males... SO i cant tell you thats why your getting males but i yes i have heard that HIGH heat leads to that

 

[SOURD777]

Thank you peeps. Repped.

This really happened after i started using open seseme and beastie from foxfarm. Could that be a reason too?

 

[c5rftw]

Thank you peeps. Repped.

This really happened after i started using open seseme and beastie from foxfarm. Could that be a reason too?

no signs of nute stress but things like that can be confusing though when you start out...

 

[rbregn]

Back off the nutes a little also. Don't water too much, that is the most common mistake

 

[SOURD777]

I had no air venting out of the tent and only an intake fan blowing air in. So i guess the negative pressure and heat couldve been the problem. Now the temps stay at 80f max with the 3xxcfm exhaust fan and the new groth and small tips of top of the plants are starting to raise. Im going to give a less nutes today and if anything flush with phed water tommrow.

Thanks

 

[c5rftw]

I had no air venting out of the tent and only an intake fan blowing air in. So i guess the negative pressure and heat couldve been the problem. Now the temps stay at 80f max with the 3xxcfm exhaust fan and the new groth and small tips of top of the plants are starting to raise. Im going to give a less nutes today and if anything flush with phed water tommrow.

Thanks

dont worry about too many thinks right now... your nutes are obviously fine or else we would see nute stress signs... and might i add, you have done very well considering the "weakness" of your plant...

the main thing when it comes to temp monitoring is that the temps you get are from the TIP of the plant ... here you get the most accurate reading..

the temp reading in your room can be(in my experience) up to 15 degrees lower than that of a temp reading derectely under your lights.. which of course your plants are...

MY point is forget about everything right now and focus on getting those temps around 85 degress ATLEAST under those lights