Yellow leaves on 6th week
- Thread starter canope
- Start date
canope
Well-Known Member
30c, im under leds so the leaf temp is around 24-26c.
I water every 2 days generally speaking
go go kid
Well-Known Member
how many feeding pumps and tanks have you got? if your useing one main tank, its a nute problem. you will be fine where the nutes are first taken up, but the more the nute solution travels through the pots, the more nutes are taken up bu the first lot of plants. the later ones wll have a lower concentration of nutes
JoeBlow5823
Well-Known Member
They look hungry. And i see a lot of "taco" leaves..... You sure your leaf/bud temp is as low as you say? If my ambient temp is 75, leaf/bud temp is usually about 80. What is the medium? Every 2 days might not be enough, those look like pretty small pots...
canope
Well-Known Member
Yes I use a ir thermometer, with led there’s less radiative hear than with hid. Medium is soil
canope
Well-Known Member
I’m not sure I understand. My whole tank is comstantly mixed and ph regulated.
I have a theory. Maybe since I put the pots on upside down buckets, the pots dont drain as well and they get a salt build up and then caused nute burn?
collieBudz
Well-Known Member
I don’t know , I see the bottoms look over ferted to me, could have been in the past but that looks like a dry/overfert problem to me.. The burn on the tips and the crispy crinkly look .. water more often less food, give them a good rinse before getting back to your schedule.. tbh most leaf sets look rough in the pic.. some of it almost looks like ph fluctuation too.. again I’d flush them and start again, shouldn’t really hurt much, run straight water for a day or two , making sure you’re ph is good, and get back to feeding a bit light gradually back to full nutes.. Less is more especially when problems arise.. get maybe some better pic not under your light , cause I’m pretty sure I see ph damage
either way there is moisture stress, and over fert I’m 99%.. u don’t want them to go into lockout which is why is flush
either way there is moisture stress, and over fert I’m 99%.. u don’t want them to go into lockout which is why is flush
BankOfSeeds
Member
Looks like fert burn
Kushash
Well-Known Member
Can't be sure from the picture provided but it looks like you might have powdery mildew.
PJ Diaz
Well-Known Member
What's that mean exactly? You are running drip lines, drain to waste? What EC are you running at and what's your runoff situation?
canope
Well-Known Member
Drain to waste, drip lines, 800-1100ppm, I never checked runoff, I should right? What ppm should runoff be? Is runoff ph important?
furnz
Well-Known Member
Last time my plants yellowed top down, like what looks to be happening, i had bud rot starting in all the tops. Whats your humidity at?
Also, 1100ppm on a drip seems like quite a bit but its hard to tell how big the plants are from pictures.
Not sure how much it matters but the pots, from what i can tell look pretty small for those size plants. Especially since there is 'soil' in them.
Also, 1100ppm on a drip seems like quite a bit but its hard to tell how big the plants are from pictures.
Not sure how much it matters but the pots, from what i can tell look pretty small for those size plants. Especially since there is 'soil' in them.
polishpollack
Well-Known Member
800-1100 is usually a ppm level for hydro. soil traps nutrients and the water amount tends to be less as the bucket is full of soil which takes up space in bucket. To feed that much is hot stuff, not in a good way. You're in late flower, these plants die naturally in late flower. I don't think I'd fert anymore. Let them die and harvest.
