Vote Now 🏆 for the Grow Awards 2025!
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Some help, please.
BrazilianKushstarted grow question 3 years ago
Ph issue or cal mag deficiency?
Open
Leaves. Color - Yellow
likes
Answer
m0useanswered grow question 3 years ago
prob calmg, give it extra, hard to tell with no diary and just a pic.
good luck
likes
Complain
Similar Grow Questions
Solved
fathermichael
Sudden Leaf Yellowing – Lighting Issue or Something Else?Hello! Yesterday, I noticed the top leaves turning slightly yellow, but today it looks dramatic. Check the pictures—leaves are yellowing and drying out rapidly. It’s only affecting the central leaves, so I suspect a lighting issue, but I’d like to confirm before taking action.Leaves. Curl up
Leaves. Color - Yellow
3 days ago
3
Solved
JSanchezz
How can i Improve my Situation ? why yellowing strarts from, the Top ?people recommend flushing, i can't flush in my situation. So what can I do to improve the situation?
Less fertilizer in the future, I get it
I am now watering with distilled water / tap water mix EC after Fert ~750ppm PH 6.5
thougt driving with co2 increases the Nutrition needLeaves. Color - Yellow
a year ago
1
Solved
JSanchezz
Deficit or too much fertilizer or EC in the soil pls helpI have been mixing my water with distilled water for 2 weeks before adding the fertilizer to correct my EC downwards. PH6.5 EC 800ppm after Fertalizer.
Leaves are still Belbn but only top not bottom stems are purple....
I am honestly at a loss (2nd grow)
should i flush or add P ?Leaves. Color - Yellow
a year ago
2
4
Solved
Fasty
One plant (the one on the right) is going yellow, with brown mottling on the leaves. Both plants have been treated exactly the same.
I’m giving the plant some calmag and extra nutrition after flushing it (which had no effect). Any ideas to save this plant? Worried…Leaves. Color - Yellow
Leaves. Color - Mottling
a year ago
1
3
Solved
Hugo2
4 days ago defoliated 3 leaves .Yesterday 2 flower showing stress , is this connected ? Normally feeding every third day 1.5 l with 2.5 ml Bionova supermix yesterday added 0.3 calmag EC 1200 PH 6.4 Also noticed that runoff PH is 5.2 runoff EC 2500 please advise thanksLeaves. Color - Yellow
a year ago
2
2
Solved
Kigfjcf
Tox/defNutrient burn ?
Light stress?Leaves. Edges burnt
Leaves. Color - Yellow
a year ago
1
Solved
MarcoCasanova00
Too much light or PH imbalance?I dont know, something strange about the color, the spots on the leaves maybe? suggestions accepted. Maybe I need to add a fan ASAP, or let more air into the tent?
Dimmer is sset to 20% 25% , maybe I should give more light? or maybe less?Leaves. Color - Yellow
Leaves. Color - Pale
Setup. Lighting
a year ago
2
2
Solved
JSanchezz
DAY44to48inFlower
you can see that they are getting more and more yellow.
what surprises me is that this only affects the upper leaves.
PH 6.5 water ppm 75
with fertilizer pH 6.6 800ppm (tap water & distilled water with)
VPD 1.3
Soil
BIOBIZZ
Can / should I do anytLeaves. Color - Yellow
a year ago
1
5
Solved
payz420
miscoloring of leavesI have some deficiensies i need help to identifyLeaves. Color - Yellow
a year ago
4
4
Solved
MMSC16
Seedling Light-burn or ToxicityHi growers!
Is this Light Burn, or nutrient toxicity from nutrient dense soil?
2 Mars Hydro TS600 lights at 27" from seedling.
PH 6.3 misting soil - RH is 75-80%. - Temp is 77F
No light meter, so I estimate PPFD is in acceptable range despite using 2 lights in 2x2 tent.Week 1
Leaves. Color - Yellow
a year ago
8
6
Solved
OmgLegendary
Coco Seedlings slow and yellowing Overwatered/high PhAutoflower seedlings are 11 days out of the coco,bit light green yellowish from start.
I gave too much water with ph around 7.5 which i saw after testing my tap water with teststrips today.
No growth for last few days
Ordered digital ph meter and ph down, is it worth to continue?Leaves. Color - Yellow
Setup. Strain - Autoflowering
Setup. Seedling
10 months ago
3
3
Solved
Ottoechen
First Grow ever. What should i do? Strain: Tropicozz (Perfect tree)The Tips of the leaves begin to turn yellow and dry. The Plants are about 15-17 Days old. The Temp is about 30C, Humidity from 35-60%. I put them in bigger pots with Grow mix 36h ago. i havent put nutrients at all until now exept vitamin and amino. From healthy to this in18 h.Leaves. Tips - Die
Leaves. Color - Yellow
10 months ago
2
1
Solved
Greeny1612
Suddenly, massive problems. Tried a lot already, nothing helped yet. Any ideas what I'm missing?Hey guys, I've been growing for a few years now and something like this has never happened to me. Long story short, as soon as I move my plants from the veggie box into the flower box, they slowly start showing these symptoms (see pictures).
The box worked fine for several growsLeaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Yellow
10 months ago
7
3
Solved
Maasamenos
Need help diagnosing and remediating issue in flower Yellowing of leaves, splotchy “stains” on leaves, purple on new growth and stemsBeen using 1/2 dose big bloom, grow big and cal mag stopped using grow big two weeks ago. Ph water between 5.7-6.5 each time and letting top inch soil completely dry between. Alternating water and feed. Should I wait for it to dry to try a flush? Additional nutes? I’m lostLeaves. Color - Yellow
Setup. Strain - Autoflowering
10 months ago
4
