leaf taco please help

dirtydoper1991

dirtydoper1991

Well-Known Member
Im growing in coco coir 3 weeks veg from seed in 5 gal pots. Getting some leaf taco on a few plants..
Lighting- 1000w hps
climate- mid 70s with 25-32 rh
feed schedule- 6/9 lucas with cal/mag x2 drip fed daily to runoff.
runoff- within 100 ppm and ph spot on in/out.
Ive had the russet mites do similar things a few years back...could be rh% or overwatering? light is at 3 ft...so i doubt thats the issue. nutes are at like 1.2 ec
 

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dirtydoper1991

dirtydoper1991

Well-Known Member
I dont currently have a loupe or Id scope it. I managed to loose it during a move recently i guess thats not going to help us for now.
 
Killaki

Killaki

Well-Known Member
dirtydoper1991 said:
Im growing in coco coir 3 weeks veg from seed in 5 gal pots. Getting some leaf taco on a few plants..
Lighting- 1000w hps
climate- mid 70s with 25-32 rh
feed schedule- 6/9 lucas with cal/mag x2 drip fed daily to runoff.
runoff- within 100 ppm and ph spot on in/out.
Ive had the russet mites do similar things a few years back...could be rh% or overwatering? light is at 3 ft...so i doubt thats the issue. nutes are at like 1.2 ec
Click to expand...
It's a little hard to see with the pictures you provided but I think you might be referring to 2 different things, feel free to correct me if I'm wrong.
This


Screenshot_20220107-184815~2.png
The upward curling,
And this,
Screenshot_20220107-184857~2.png
With the leaves clawing downward-
Are possibly two different problems.

Leaves curling up are more like low rh/temp or light stress.
The clawing downward leaves are more indicative of high rh, which you don't have. Too much nitrogen, but I don't know based off your pics if you have the other symptoms. And finally moisture/over watering, which is not really a thing in straight coco from what I've understood. Looks like you've mixed the coco with something(s). What's your medium mixture?
 
dirtydoper1991

dirtydoper1991

Well-Known Member
50/50 canna coco/perlite. the feed was slowly dialed up from week 1-3 as follows 450/550/600 (1.3.ish ec). I noticed the issue at low ppms. ppms got dialed up as plants got hungry.
 
dirtydoper1991

dirtydoper1991

Well-Known Member
I'm pretty experienced at 12 years in, but have not gotten room totally dialed in early veg at the new house. As the room fills up I'll eventually need a dehumidifer. I had a hunch on the humidity being an issue as well and invested in a humidifer..which is doing nothing against this 5 degree bone dry winter day.
 
Killaki

Killaki

Well-Known Member
Rurumo said:
Typically they taco with either high temps or low RH. In this case it's probably your low RH, I'd try to get that up if you can.
Click to expand...
I'm pretty sure you're the one who did the in depth Coco tests, very informative btw, so I'm inclined to believe your opinion.
dirtydoper1991 said:
That claw leaf was originally curled up like the other leaf. the problem comes and goes. Some days those leaves look totally normal. Probably indicative of the RH fluctuation.
Click to expand...
Yeah I would think the Rh is your biggest problem at the moment.
 
dirtydoper1991

dirtydoper1991

Well-Known Member
Yeah i know lol. its a pretty big room thats just the corner. Gonna expand to 4k in flower and need to turn on my dehumidifer -_-. WInter is hell even with a half decent humidifer until the room fills up. I can try to cut the exhaust down speed wise and put it on a timer. That would definately help. Kind of unsure on how to dial the fan in. my lights are air cooled seperately so that should help.
 
Cooked

Cooked

Member
I have been discouraged in the past about the efficacy of humidifiers, however it took me some time to realize that everything in the room is less humid as well and will absorb X amount of water from the air. I find that it takes time to 'prime' the room - waiting a few days of humidity output before everything is where it needs to be. I find this especially with lots of exposed wood like 2x4 2x6 studs etc.
 
Masterdank420

Masterdank420

Well-Known Member
Cooked said:
I have been discouraged in the past about the efficacy of humidifiers, however it took me some time to realize that everything in the room is less humid as well and will absorb X amount of water from the air. I find that it takes time to 'prime' the room - waiting a few days of humidity output before everything is where it needs to be. I find this especially with lots of exposed wood like 2x4 2x6 studs etc.
Click to expand...
Cement also absorbs water like crazy, no joke. Took me one week with 2 humidifiers to get it up to just 50% lol
 
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