leaves twisting and curling down - PICS

[knucklehead]

so this plant is 10 weeks old and is 3 weeks into flowering. things were going great until last friday
then i noticed all the leaves around the bud sites cupped and curled down - it looks like an eagles claw. i didnt make any changes to the system other than spaying all the plants with seltzer water which i was doing quite a bit for 2 or 3 days max.
looking for some advice b/c i really need this plant to make it.

system spec's - the plant is watered 5 times a day for 6 minutes (ebb/flow) using GH Flora 3 part nutes.
PPM's are always around 850 and the PH is always 5.9/5.8.
the light is 600 watt and doesnt feel too hot on my hand when i place it between the plant and reflector.
i have an exhaust fan, a passive intake and another fan circulating the air.
temps are normally between 65 and 80.
the res has been nasty but i changed the h2o and bought a new solid black plastic tote.

pic1 is a close up of the damage to the bud leaves.
pic2 is another shot that that shows the extent of the plant damage.
pic3 is a shot of one of the large fan leaves twisting.
pic 4 is a general shot of my room.
pic5 shows the stats for the environment.

if you need more information let me know.

 

[pennywise619]

Not a definite diagnosis, but it sounds like excessive heat.

Possibly a combination of too much water and over-heating, as plants may curl their leaves up in an attempt to speed evaporation.

Since the action of evaporation cools the tissue where it happens, it may be that plants are trying for just this effect, rather than trying to rid themselves of excess water.

Try spraying one plant with a fine mist of water (which with evaporate by itself, and not require the plant to use internal water) and see if this helps the the leaves flatten out and return to normal.

 

[knucklehead]

Pennywise - i sprayed it down last night and ill check on it this evening and upload some pictures. i also raised my light a bit more so now it's about 17" above the plant tops.

thanks.

 

[pennywise619]

Pennywise - i sprayed it down last night and ill check on it this evening and upload some pictures. i also raised my light a bit more so now it's about 17" above the plant tops.

thanks.

So what was the outcome???

 

[smokeybandit22]

ur leaf curling is an early sign of over fert- I see some of the larger fans tips are gonna start burning. back off the N nutes

 

[knucklehead]

So what was the outcome???

not sure yet - still at work. ill get back to you later tonight. my lights come on at 6pm mountain time and it's only 4:30pm now.

thanks.

 

[knucklehead]

ur leaf curling is an early sign of over fert- I see some of the larger fans tips are gonna start burning. back off the N nutes

crap! - i just did a res change last night that's fairly potent for my environment - 900ppm's.
If i remember correctly the N nutes are used heavily during the vegetative stage - the good news is i mixed a soup for the flowering stage which was 3ml gro, 7ml micro, and 12ml bloom per gallon of water and i use a 12 gallon res.

hummm - what to do??


thanks.

 

[smokeybandit22]

crap! - i just did a res change last night that's fairly potent for my environment - 900ppm's.
If i remember correctly the N nutes are used heavily during the vegetative stage - the good news is i mixed a soup for the flowering stage which was 3ml gro, 7ml micro, and 12ml bloom per gallon of water and i use a 12 gallon res.

hummm - what to do??


thanks.

much more common with sativa than your indica so i think u should be ok with your ppms. I noticed your RH is under 30% and leaves will cup down like that to conserve moisture. I would try getting ur humidity up- some wet rags in a bowl and see if that helps.

 

[knucklehead]

so last night i wasn't able to get any pictures up bc i had to help a buddy with his new veg room. as far as the damaged plant goes it didn't look any worse but not much better. i sprayed the leaves with a little seltzer water and added more h2o to the res to bring the nutes back down to 850ppm - they had climbed up to 1000ppm.
ill pickup a humidifier and report back in a couple days.
thanks for the reply's everyone.

 

[SUPERHANDS]

Hold back on the nuits, get your fan pointing to your light/lights to cool them down, 2 fans is best, i use 2 small fans 1 pointing at light one hitting a wall then my plants 2nd hand (not direct at the plants) that should do the trick, best of luck.

 

[knucklehead]

i took these pictures tonight with my camera phone. i think the plant looks about the same as last week but it appears it isnt getting any worse so im going to keep doin what im doin.
i tried all the suggestions in the thread except for adding the humidifier which i will do later. i continue to use the CO2 and added a little epsom salt to the nutes thinking i may have a mag deficiency b/c my water comes out of the tap at 250ppm/7.5ph.
the skunk plant is doing fine and showing no signs of trouble - i also added a month old clone in the flower room just to see what happens.
pic1 and 2 showing the same damaged area.
pic3 is one of my clones i put in the flower room.

 

[smokeybandit22]

woa dude, way over board on the N fert. dark green, shiny leaves, inhibited bud growth. exactly what i stated before the pics. not even the ppms, but the ratio of n way way way too high. drop the n ferts, like yesterday

 

[knucklehead]

woa dude, way over board on the N fert. dark green, shiny leaves, inhibited bud growth. exactly what i stated before the pics. not even the ppms, but the ratio of n way way way too high. drop the n ferts, like yesterday

ill give it a go and report back later this week.

thanks for the advice!

 

[knucklehead]

last night after my post i went down to check on the plants and i noticed the plant with problems is beginning to lose some of the dark green color and is becoming a little more of a lime color. im guessing this is the result of mixing the nutes for flowering meaning less nitrogen.

 

[fat sam]

you got a bad case of nute burn, flush flush flush i grew some haze before and they were super sensitive to over feeding, even a slight dose to much and they would curl under like that, after you flush you should see improvement in a few days, give them water for 2 days then slowly give them nutes again, like half strength

 

[knucklehead]

you got a bad case of nute burn, flush flush flush i grew some haze before and they were super sensitive to over feeding, even a slight dose to much and they would curl under like that, after you flush you should see improvement in a few days, give them water for 2 days then slowly give them nutes again, like half strength

so ive been flushing the plant with PH'd water the last couple days and i think im starting to improvement. the fan leaves are starting to raise towards the light kind of like a "V" as well as the smaller bud site leaves. the leaves that curled down like a claw look the same - dark green and crispy. i wonder if they will ever look normal?

 

[smokeybandit22]

from the last set of pics, the last one- the preemie- looks like her fans are yellowing pretty evenly-you can prob raise her ppms a bit, ur grow formula.
the first 2 of ur flowering chicks, your nute mix is or was off. I would not be following the directions on the bottle. looks like too much grow and not enough bloom. I would say u r using close to full strength grow still?
I think I can make out the beggining of P deficiency-1st pic- I see a dark purpling tinge on the upper most fans in the center of the leaves-typical P def in this stage of flowering. And 2nd pic, that fan leaf tip is doing 'the twist' very common early stage of P deficiency.
they look ok just something you need to nail down now as this is the time the bud sites are formed that will later yield your undetermined harvest.
U may already have everything under control as I post, but referencing what I think happened. may want to increase ur flood time by about 3-5 minutes for next week or so to get everything on track.
and most impt thing-GH nutes known for excessive salt build ups so flushing those rockwool cubes is very very important once every 10-14 days. Pick up some clearex to help.

 

[smokeybandit22]

also, I would ditch the seltzer water spraying and all spraying. ur humidity seems low contributing to the downward cupping. some wet rags in a bowl should help. ditch the foliar spraying

 

[knucklehead]

Smokey - thanks for the reply. i put the plant back into the flood with PPM's right at 1K/5.9PH with a bloom mix. for me it's kinda hard to figure out what kind of nute mix b/c i dont change my tank every week and the GH feeding chart is broken down into weeks. i just need more practice i guess. i also want to go to a two part nute - the reason - one less bottle to buy and mix. can i do a nute swap in the middle of a grow?
i think the burned plant is as good as it's gonna get. it's a beatuiful plant it just needs a better grower.
oh yea the foliar feeding is no more.

thanks again!