FerrisBueller
New Member
Yes, I took a sample of the substance from one of my inline filters. I know it's deficient, I just dont quite know this strain yet. Also, I need to find the cause. Thanks for the input!
Guide to Nutrient Deficiency or Toxicity
- Thread starter nick17gar
- Start date
growfreedom
Member
Have several leaves that did this overnight on different plants. Any idea what it might be. Using green leaf nutrients mega crop in DWC. PH is 5.8 just set it last night before the leaves did this.
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Roger A. Shrubber
Well-Known Member
looks like major ph shift damage, don't know what else does that, that quick
growfreedom
Member
Ok. My ph was about 6.5 yesterday so I set it to 5.8. Don' know why it climbed so much. Seems like a small shift. Would that be enough?
Roger A. Shrubber
Well-Known Member
are you in veg or flower? check your roots, if they look healthy, i'd say its probably just from rapid growth. you may just have to check your res daily for a while.
yoshisisland
Member
if i have a 2 lower leaves that have some damage similar to that should i cut them off or let them try and recover?
growfreedom
Member
I don' think leaves recover. I usually remove them to keep them from being a drain on the plant. I'm in veg but they're auto and just beginning to stretch. Roots are healthy and they looked much better today after work.
Breedingbull
Well-Known Member
Can anyone help...cob lights about 21 inch’s away full blast about 900 Watts in a 4x4 sunshine advanced number 4 mix 3 gallon pot humbolt nutrients ph 6.3area have been feeding about 50% of charts but this has happened on a few plants and wanna get to the bottom of this because I never experienced this until I switched to cobs I’m also a newbie I asked a few people and no one really can give me a answer that makes sense besides I’m underfeeding somehow but I’m most certainly feeding them something
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CookieKush
Well-Known Member
Two words: Light burn
Raise your COB to 30 inches dude or you'll continue to BBQ your girls.
Og grumble
Well-Known Member
Any help is greatly appreciated. Almost positive this is nute burn tho. Just bad on this leaf for some reason. A few other leaves have the signature nute burn on the very tip but this one has it bad. I think its spreading too. Should i cut it off? Im using kind soil (hot soil) with no added nutes. This happened a few days after transplanting to the hot soil which is why im sure its nute burn. Sorry for my shitty camera. The first pic is the bad leaf the others are just the tips.
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CookieKush
Well-Known Member
100% soils too hot.. this is what happened to me the other week and I had to make the decision to kill it and start with coco coir and fresh beans.
Og grumble
Well-Known Member
Thats kinda what i figured. Thanks. The people at kind soil sorta make it known that if you transplant too early you'll get burned, but they say they'll grow into it just fine. I thought they were old enough but i guess not... The kind soil is only in the bottom 1/3 of the pot and the top is just happy frog so im gonna ride it out for a little while and see if they grow into the kind soil like they say.
Og grumble
Well-Known Member
You think that dying leaf is an invitation for pests and problems? Like should i cut it off?
Og grumble
Well-Known Member
Makes sense. Thanks.
puffinggee
Member
Glad to read something very informative, like it's from a botanist
Anyone know how I should proceed? I gave my plants nutes first time about week ago, have given them twice now also I have been watering them for a month with about 7,5pH water, with nutes it dropped to about 6.0pH. Many plants seem to be sick now. Lower leaves are dying overnight. Should I flush them? Should I just keep giving them only water? Is it possible to have potassium deficiency and nitrogen toxicity at same time? Got a nasty claw going here and there too...
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Have you checked for rot?
Is your medium salty?
If plants, are in a small pot. They can grow tall, and skinny.
If they run out of pot space, they can droop too. Because of, lack of oxygen.
How good is your drainage?
Sorry, it could be a few things. These are good places to start.
Good luck.
I forgot to mention I took the illest looking plant and checked roots ("outside" of the soil") it wasn't rootbound, roots i saw seemed to be healthy. Drainage seems to be good as I have perlite on bottom of container which I covered with some kind of material which lets water run but soil doesnt get through it, cant remember what it is in english and everytime I water my plants i water untill I see 10-20% runoff water. I have to do some research about salty soil, I'm not familiar with that. Could it be that I didn't have pH testing kit with me earlier this grow and I have been watering them with almost 8pH water and now dropped it instantly to about 6pH?
Cheers
Cheers