HEAT KILLS???

[greenlf87]

well i came home from work the other day and it got a lil hotter in my cab that day it was only about 88deg f when i got home but plants looked so unhappy! and i was informed that at about 18hr or so i should see improvement, but haven't seen it yet so here i am in the infirmary!



How long has this problem been going on? only 3 days
What STRAIN are you growing?NLxAK47
What was the establishing technique? (seed or clone?)clone
What is the age of your plants? about 2 1/2 mo
How Tall are the plants? about 12''
What PHASE (seedling, vegetative or flower) are the plants in? day 13 of flower
What Technique are you using? (SOG, SCROG etc)started to lst but gave that up seeing as i had plent of head room
What size pots are you using? (Include how many subjects to pot)1 plant per pot 1Q pots but last night put them in 3gal bags
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)black gold and just about 25% perlite
What Nutrient's are you using?flora nova
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*1 tbs a gallon and it only takes about half of that to water the aks
How often are you feeding?every 3 days or so i water feed every water
If flowering, when did you switch over to using Bloom nutrients? 4 days into flower
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)its just one bottle

What is the pH of the "RUN-OFF"? don't have the correct tools to check ph
What method of pH test was administered? Using Strips? pH pen? none
How often are you watering? about every 3days
When was your last feeding and how often are you feeding?every water
What size bulb are you using? i have a 70w hps and a 150w hps and to 42w cfls
What is the distance to the canopy? it was a lil less than 12'' but that was moved to about 20'' or so
What is your RH Factor? (Relative Humidity) low no meter but i do run a dehumidifier
What is the canopy temperature? stays around 75 to 80
What is the Day/Night Temp? (Include fluctuation range)only drops about 5deg if that
What is the current Air Flow? (cfm etc.) kinda an open cap
Tell us about your ventilation, intake exhaust and when its running and not running ?all the time even at night just got one fan pulling out and a hole for intake
Is the fan blowing directly at plants? yes one of them
Is the grow substrate constantly wet or moist? no let it dry for a wile before i soke them down
Is your water HARD or SOFT? its just airrarated tap whater
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? tap
Are you using water from a water softener?no
Has plant been recently pruned, cloned or pinched?no
Have any pest chemicals been used? If so what and when?none
Are plant's infected with pest's? no



well here is what they look like any help would be great! am i going to loose all of my leaves or will they pull through?








i hope they make it!!

 

[Homegrow3r]

I've grown very successfully in a tent where my temps were constantly in or about 32c(89f), so I doubt if that's the problem you're facing. Looks more like nutes or overwatering to me.

 

[mexilandrace]

looks like over ferting more than temps.

In general leafs effected like that don't really look right ever.

Wait, you are feeding every time you water? Stop that if so, and I would flush just about anything you have been doing that to.

 

[whodi]

I'm not sure what causes this. 2 out of 4 of my plants are doing this in veg. I'm using coco and water/feed every day. My strains are White Widow and NL x AK47. One of my white widows are doing this and one of my Nl x ak47 are doing this. The rest seem okay. The ones that are doing it are getting the most light. I'm thinking it's a heat problem as well. Moving my light up more seemed to help. I water/fed my last plants every day in coco and didn't have this problem so i'm not sure what it could be exactly.

I figured if it were over ferted then the tips would be burnt badly. My tips are fine. The top leaves are just hard and curled under. The mid - lower growth is fine.

 

[CaStoner]

Could have been root bound also having them in 1Quart containers, kind of small for 2.5 months of growth should have maybe been around 3 ft bush.

 

[tree&leaf]

Your plants are under-watered.

Perplexing I know, particularly when you state that you're watering them every 3 days, but 1 quart pots? Far too small to be able to hold enough water for those size plants.

What happened, is that during that hot spell, the plants transpired so much water, the leaves curled under like that to slow down and reduce the rate of transpiration. Plants transpire water from pores under the leaf, that's why they curl under like that to reduce the surface area of evaporation.

You clearly understood that the pots they were in were too small, because you've transplanted them into 3 gal bags, I hope you gave them a good watering after you transplanted them.

Now they're in larger pots capable of sustaining healthy growth, you may need to look again at your feeding frequency, you shouldn't really need to be feeding every watering in those size containers.

Give it a few days monitoring them, they should be fine as long as areas of the plant haven't died.

Be patient and monitor them.

 

[stihgnobevoli]

classic overfert. too much n causes leaves to curl under and roll under at the edges. the claw as they call it. do a search if you like. prolly compounded by the heat. water more often if you cant get it cooler, and like the guy before said they never recover, they still function as leaves so dont worry too much.

grew like this from 3rd week of flower when they clawed up. still came out good. chopped a little early.

 

[whodi]

Mine curl under at the top growth mainly.. the lower - mid growth is fine... what do you think could be the problem? I water once daily in 3 gallon coco pots. Only 2 of the plants are like this

 

[greenlf87]

well thanks to all! i went today and got a ph testing kit and some new nuts. tested the run off and it was low so will flush for a couple of waters it so weird that the other plants showed no sign of the same problems and as for the looks of things its not going to get any better any time soon will take weeks to recover from this well one again thanks to all! so my ak's will always be ugly now?????????

here is a pic of the bag seed in same cab with same nuts
and they look great.


oh and wodie looks like over water to me! do you let them dry out between watering??