By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Potassium Deficiency?
FoTwennystarted grow question 4 years ago
I flushed per Fox Farm feed sched after week 3. PPM of runoff was high, so continued flush until PPM readings under 1800. Now, one plants is presenting what I suspect to be a K deficiency. Flush was Fri & fed again Tue when first noticed K def. Feed again or wait?
Open
Leaves. Edges burnt
Leaves. Color - Mottling
Feeding. Deficiences
like
Answer
FoTwennyanswered grow question 4 years ago
@The8thChevron, The fox Farm Feed schedule cites 2100-2310 for the 4th week of 12/12 when growing in soil. I was trying to shoot low, because I usually half strength things as it is. I am pushing more light than I ever have so thought I could go a little higher with the PPMs than half strength. So, you think it's too high and locking out? I do have a fair amount of coco in my soil mix too and the FF Coco feed schedule cites 1470-1610 PPM for this stage of flower. So, you may be right about too high PPM.
like
Complain
The8thChevronanswered grow question 4 years ago
1800 is still ridiculously hot. Unless you're reading EC, that is. Assuming its ppms and not EC, you probably have a lockout and need to keep flushing. 1800 EC is still a little hot around 850 ppms, but you shouldnt have to flush more.
1 like
Complain
Similar Grow Questions
Solved
Scrubs1983
Is this a nutrient defiecency or nutes burn?Hi.. Im grwing an auto sweet cbd day 46 i ve noticed lately some yellowing tips on new growth and slight intervenal chlorosis on older leaves ...currently feedin with npk high ph every other week and malasses plus seaweed the other please advice light 250 w 30_35 cm distance
Feeding. Deficiences
4 years ago
3
4
Solved
Bryankush
FoglieHo un problema alle foglie sapete cosa sia? Ho provato ad alzare i led a 50cm per vedere se sia quello il problema. Voi cosa dite?
Leaves. Edges burnt
Leaves. Color - Dark-brown
4 years ago
2
3
Solved
Daffie_Toke
From burn to defficientHey boys (and girls) , i have a little issue ,
I amended my soil(before planting) with wormcastings but one of my plants isnt liking it too much , she is getting burned but the moment i flush she is getting cal mag defficiency , what should i do ?
Feeding. Deficiences
4 years ago
2
4
Solved
TheNewNoobOnTheBlock
What am I dealing with here?Since like 10 days, around the time the Lemon started flowering and I have started to remove some leaves in the bottom and to the sides to keep the monster grow in check, the leaves of the middle to top of the plant started to turn yellow and eventually dry out
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Tips - Die
4 years ago
6
Solved
SirTucksAlot
Is this light burn or wind?I’m running 3 different lights one being a EcoSun LED Light Bars 900mm at 50cms
Thanks guys
Leaves. Edges burnt
4 years ago
3
Solved
minigroww
Continuing calmag deficiencyWhat I think is a calmag deficiency started about 10 days ago. At first I thought it was too low PH (6.0 - 6.1), so I corrected that, but no luck. Then I started adding biobizz calmag, still no luck. It seems that the deficiencies are picking up speed again. Any ideas appreciated
Leaves. Veins - yellow between
Leaves. Color - Dark-brown
Feeding. Deficiences
4 years ago
2
4
Solved
NewJackWeed
Wilting leaves and copper spots? Save Me!These copper spots started appearing around 2021-01-28, and the wilting leaves started 2021-01-29. The newest additions to the environment were the much stronger MarsHydro 300w light. I've had to water more often because it dries out pretty quick with the rampant heat. what next?
Leaves. Wilting
Leaves. Color - Yellow
Leaves. Color - Mottling
4 years ago
5
8
Solved
curious_jules
Brown leaves - what am I doing wrong, folks?They look yellow in the photo, under 250W of blue light, but they are brown.
This starts at the tips of the large lower leaves and spreads quickly to the whole leaf.
Also modest edge curl.
What am I doing wrong here, folks?
Leaves. Curl up
Leaves. Color - Dark-brown
Leaves. Color - Mottling
4 years ago
3
3
Solved
Mikewithgreenthumbs420
Problems leaves spotting help please flower week 4Nutes problem not sure what's going on? package coming in any day containing General hydroponics "trio" what should I feed it first out of the 3 nutes any advice would be much appreciated just been giving it water any calimagic pot for pot kit this plant is sick I think. thanks
Leaves. Other
Feeding. Deficiences
4 years ago
1
Solved
iMeus
Brown spots and patchesI got some spots that look like cal-mag deficiency on 3/8 of my plants. I put some pics up that say "cal mag issue?" for reference. Not sure what this is especially when the others are looking happy. Let me know your thoughts <3Leaves. Color - Mottling
4 years ago
2
2
Solved
EmeraldGrows
Leaf issues with 3 Pineapple Express Autos - is it burn or deficiency?All 3 plants are having issues to the lower leaves. They are dried and brown blotches, brown edges of the leaves, leaves drooping off and curling down and brown. They switched to Canna Terra Flora two weeks ago - is this a over feed or deficiency?
Leaves. Edges burnt
Leaves. Curl down
Leaves. Color - Dark-brown
4 years ago
2
2
Solved
budda420
Calcium deficiency or excess??Could anybody tell me whats happening here im assuming its either a calcium deficiency or excess any help would be much appreciated
PH is around about 6.5-6.8 every watering not sure about the run off or ppm
This is the only leaf with the spot on but showed up overnight
Leaves. Other
Feeding. Deficiences
4 years ago
1
1
Solved
GhettoStyle
Please tell me why the veins of the leaves are so yellow!?Please tell me why the veins of the leaves are so yellow!? what could it be? zinc block or cal-mag shortage ? pH all the time was 6.3-6.5, EC first was 0.7 today when I saw the yellowness on the leaves I lowered the EC to 0.5
Leaves. Color - Yellow
Leaves. Other
Feeding. Deficiences
4 years ago
3
1
Solved
AJarOfNotDirt
Burned TipsIs it over or underfeed , because some tips burned ... ?!Leaves. Tips - Burnt
Feeding. Deficiences
4 years ago
1
2
Solved
OneDropOfTHC
Ph too Alcaline! Help to naturally bring it down.Guys my soil PH is at between 7.5-7.8, how do i bring it down? The water is at 7.1 and 7.5. Can i use vinegar to fix this? Should i water abundantly like flushing, with vinegar laced water? With what ph? 6.0? 5.0? Im measuring with liquid phenol red so range might be off a bit.Feeding. Deficiences
4 years ago
3
3
Solved
Tunisian_Lab
Leaves burntHi everyone, what is this please, and what could i do?
Leaves. Edges burnt
4 years ago
3
3
Solved
z0laire
Burnt looking seedlingWhat's going on with my #2 seedling? I thought it could be light burn and raised my light by 4" but the odd coloration on the tips has gotten worse 18hr later. It also doesn't seem to be drinking whats in the coco yet so I'm cautious about feeding.
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Curl down
4 years ago
2
3
Solved
SirSmokeALot333
Deficiency / harvestHey all can anyone tell me what this is? Looks for my something like cal mag or lockout. But I don't know now, should I feed her 1-2 more times or should I just give her water now I think she gonna get rdy in 2 weeks. The deficiency starts from top to bottom.
Leaves. Tips - Burnt
Feeding. Deficiences
4 years ago
2
2