Do all leaf deficiencies/toxicities leave a permanent scar?

[DevonDank]

Ok first thing is them plants are heat stressed, can you lower them? I know that seems like a dumbass question because if you could cool it down I am sure u already would have lol. But I guess more specifically do you have enough air flow with an extraction fan and a fan to move the air inside?
Also Your leaf curl is not from nute burn. Imo it’s from heat. Also what is your RH%
As far as your tips being “burnt” that is actually perfect. This is what a lottttttt of growers who have been growing a long time tell when to back off their nutes. You feed em til you see that tiny bit of tip yellowing then back off 10% of your nute schedule.

thanks for the information, very much appreciated.

RH right now 55%

i have 150mm large extractor vented to outside and a 100mm fresh air flow coming in from another direction, plus an osc tower fan in all 4 corners at ground level and osc circular fans up at the light level

seems like the weeks 5 & 6 have caused this as we had days and days of temps here up in the 30's

i will have a look at see if can improve the temps and start to feed her up again if you think the leaves look ok

thank you again for taking the time to reply

 

[derek420colorado]

thanks for the information, very much appreciated.

RH right now 55%

i have 150mm large extractor vented to outside and a 100mm fresh air flow coming in from another direction, plus an osc tower fan in all 4 corners at ground level and osc circular fans up at the light level

seems like the weeks 5 & 6 have caused this as we had days and days of temps here up in the 30's

i will have a look at see if can improve the temps and start to feed her up again if you think the leaves look ok

thank you again for taking the time to reply

Yeah man as far as the nutes go I think you are fine. If there is a way to drop those temps a bit that would be ideal. You might try getting a wet towel and putting it near the intake of your osc fan til raise the RH but it shouldnt be too much. Also there are lotttts of strains that just kinda curl up like that on their own. I have a couple goin right now that I would have sworn we’re heat stressed if the temp hadn’t been 68F at the time lol. Hopefully with cooler temps on the way it will be getting better as you move toward the finish line.

 

[DevonDank]

Yeah man as far as the nutes go I think you are fine. If there is a way to drop those temps a bit that would be ideal. You might try getting a wet towel and putting it near the intake of your osc fan til raise the RH but it shouldnt be too much. Also there are lotttts of strains that just kinda curl up like that on their own. I have a couple goin right now that I would have sworn we’re heat stressed if the temp hadn’t been 68F at the time lol. Hopefully with cooler temps on the way it will be getting better as you move toward the finish line.

So excuse my ignorance but higher humidity will help to reduce the heat stress? Only i have a small dehumidifier n there as had trouble n the past with spider mites and read they dislike the dryer environment.... i guess i should be turning that off then?

 

[derek420colorado]

So excuse my ignorance but higher humidity will help to reduce the heat stress? Only i have a small dehumidifier n there as had trouble n the past with spider mites and read they dislike the dryer environment.... i guess i should be turning that off then?

Sorry bud I meant to say itll not til. It will raise the rh some but it should make it a little bit cooler. Leave the dehumidifier actually she that should negate the rise in rh