Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
WTF?
CzechEbola
started grow question 6y ago
Hi my growers friends. Have a question on you. Looks like Ca+mg deficiency? What do you think
Open
Leaves. Color - Yellow
likes
Answer
Bloombuster
answered grow question 6y ago
Дефицит фосфора на фоне переизбытка азотом! Сделай меньше добавки Gro и больше добавки Bloom! 👆 Соотношение (Gro:Bloom): - для конца веги (1:1), - начала цветения (1:3) - конец цветения Gro не вноси вообще, только Bloom! 👌 Удачи, бро! ✊😇
1 like
Complain
Similar Grow Questions
Solved
DoDrugs420
Purpling, contorting, drying, yellowing.
Leaves are going all nuts, i think it was from a bad feeding, i've been too busy, no time for notes, they started going purple after feeding so i used plain water for the next 3 waterings with +water, tops started showing calcium lack, anyone can confirm? Give bloom+cal right?thx
Week 10
Leaves. Color - Yellow
Leaves. Color - Dark-purple
Feeding. Other
6y ago
1
2
Solved
FunnyWolf
Yellow spots on leaves
Hi, I've noticed these spots on the leaves, does anyone know what they are please? Leaf Septoria? I hope not. It's a soil culture under leds, I used Biobizz products (Bio grow, bio bloom, top max) with biobizz calmag, I adjusted the ph to 6.5 with biobizz bio down. Thank you,
Leaves. Color - Yellow
1y ago
1
3
Solved
Accidental_Grower84
Yellow spots on leaves
Hi Growers! First grow here and I'm concerned about new yellow spots on my lower fan leaves (one tip is dark too). Soil is Atami Kilomix, heavily fertilized. 2 days ago only one leave was affected. What can it be? Mg def? N def? P def? N tox? Too less water (100ml every 2-3days)?
Week 6
Leaves. Color - Yellow
6y ago
1
1
Solved
Zweibel
Am I taking the correct steps?
I think this is due to a combination of overwatering (1l per 24 h in 60% Light-Mix, 30% coco, 10% perlite) and possibly overfeeding (used close to recommended dosage). I have let her dry out for almost 2 days and today watered 0.5 l plain water ph-ed to 6.5. What do you think?
Week 6
Leaves. Color - Yellow
6y ago
5
7
Solved
Wildgrass
Leaves turning yellow with brown patches
I noticed the first real leaves on one of my plants turning yellow in FFOF. I transplanted them into bigger pots with ProMix M in hope that it would stop. Condition seems to continue worsening. I have started to notice the cotyledons on some of the plants turning yellow.
Week 4
Leaves. Color - Yellow
Leaves. Color - Dark-brown
6y ago
2
2
Solved
Ju_Bps
Yellow leaves since 1 week
Hello my friends, More and more yellow leaves since 1 week. I need to be worry? I think it's not a problem of ph because my other plant look healthy. Maybe too much water? I just give her 2 x 0.6 liter per week and fertilizer only 1 times per week. Senescence? Thanks for help
Week 11
Leaves. Color - Yellow
5y ago
3
3
Solved
Viccrazyweed
Critical showing deficiency or excess, anyone know how to solve it???
One of my beauties is showing for the first time a nutrient issue, a couple of leaves are showing yellow colouring, the very rest of the plant is homogeneous deep green so i assume she is almost fine, but i really want to listen to her and care, I think it could be nitrogen def
Week 13
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
2
3
Solved
blackcald
Strange yellow spots
Strange yellow spots on top leaves, what am I doing wrong?
Week 3
Leaves. Color - Yellow
6y ago
1
1
Solved
Starr
Lower leaves looking like this on multiple plants
What does this leaf tell you? a deficiency?
Week 8
Leaves. Color - Yellow
5y ago
2
7
Solved
Ferelite
Bottom of plant looking shit
Bottom of plant not looking too good, can't tell if from lack of light, over/under watering or the start of a nitrogen deficiency, plants been in super soil for 9 weeks so not sure if nitrogen is getting low. Started to look rough about a week ago
Week 16
Leaves. Too many
Leaves. Color - Yellow
Plant. Other
6y ago
4
1
Solved
aRecreationalist
CalMag or something else?
Discolored leaves at the bottom of a 3 week young auto flower, full feeding schedule in diary. Was thinking Cal-mag deficiency, but after 4 days of running 2mL/L Cal-mag supplements it's still getting worse. Could it be lack of phosphor, and will BioBizz FishMix/Grow be enough?
Week 3
Leaves. Color - Yellow
6y ago
3
4
Solved
420cfm
Am I overwatering or underwatering Too much nutrients or not enough? Should transplant to a 5g?
Week 8
Leaves. Color - Yellow
8y ago
7
4
Solved
StarPlatinum
Early growth sick plants - photoperiod
Purpling stem, yellowing leaves, droopy leaves - I’m thinking nitrogen deficiency, but I’m not sure if I should add more nutrients or not to my current solution or if I should flush completely. PPM is at 850, and the PH is 6.3. What are your thoughts? Any GH nutrient schedules?
Leaves. Curl down
Leaves. Color - Yellow
Plant. Stem - Red or purple
3y ago
5
4
Solved
JoshuaTreez
Help :)
Is this potassium deficiency? Or nitrogen toxicity?
Leaves. Color - Yellow
5y ago
1
2
Solved
Lotigreen
Light streets? Or nutrient burn?
Hols esto puede ser estrés por las lámparas? Empieza en la parte superior y en la parte inferior apenas se ve. Las hojas se vuelven amarillas desde las puntas hacia el centro. Sobre todo en la parte de arriba. Esta debajo de una lámpara de 200w
Leaves. Tips - Burnt
Leaves. Color - Yellow
1y ago
1
3
Solved
jarshman
Yellow leaves?
This is my first time growing. I have four plants going, this one started a week later and is growing faster but is starting to develop yellow leaves. Not sure why? It’s getting plenty of sun and give it water regularly. Suggestions?
Week 2
Leaves. Color - Yellow
6y ago
1
3
Solved
GhettoSetUp
Yellow leaves from bottom upwards
I have yellowing leaves from the bottom up. It resembles either N deficiency, MG deficiency or both. Growing in soil. PH is between 6.5-6.8. Feeding 1ml/L fish mix and 3ml/L bio-bloom every other watering. I tried adding cal-mag with N at 1ml/L and if anything it's got worse.
Week 9
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
3
1
Solved
sdelapena85
Anyone out there able to identify N deficiency on newer leaves or if the lighter color is just the way the strains new growth looks? I worry and have the habit of wanting to do more more more which I am trying to stop. Trying organic. Should I roll on, feed N, or top dress?
Week 8
Leaves. Color - Yellow
7y ago
1
1
Solved
Chow_13
PH Fluctuations and/or Nutrient Issues?
I'm Running a Recirculating Deep Water Culture System( hydro). Had PH dropping dramatically a few days back but did a full water change and everything has stabilized. Just Flipped to a 12/12. Does it look like that was the issue or is it nutrient toxicity/deficiency. Or Stress?
Week 9
Leaves. Veins - yellow between
Leaves. Color - Yellow
5y ago
2
Solved
Jannis_Botanicum
Yellow/Brownish colored tips of leaves.
So, my girl now is 11 days old, while i was looking at here i noticed that the tips of the second pair of true leaves is soightly yellow/brownish colored, im worried for my plant. Could it be a wind burn ? I have a ventilator in my tent which was blowing at here. I moved it now.
Week 2
Leaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5y ago
2
3