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
Still deficiency? Or wrong diagnosis?
Shotiiestarted grow question 4 years ago
Hi I have a cal mag deficiency it appears? I gave her some calmag yesterday about a half liter (from a gallon/5ml dose) bc she's already wet. How long does it take to correct this? I also have been spraying the leaves. OR did i diagnose wrong?
Solved
Leaves. Color - Dark-brown
likes
Mrs_Larimaranswered grow question 4 years ago
it takes afew days and slow dosages on her to look better
OrganicNature420answered grow question 4 years ago
I wouldn't spray the leaves during flower mate that's most likely your problem
likes
Complain
Similar Grow Questions
Solved
CoolGuy123
Leaves keep turning brown and yellowIt all begann with what I thought was light burn. I then considered it CalMag deficiency. Giving it CalMag did not stop it.
My current guess is too low pH due to strip inaccuracies, so I gave it around 8 today instead.
What do you recon, why could it keep getting worse?Leaves. Color - Yellow
Leaves. Color - Dark-brown
12 days ago
4
Solved
Gorilla_cookies92
is this calmag defiency and nitrogen defiency? Couple of lower leaves turning yellow and couple leaves have brown Spot. Gorilla zkittlez auto day 39 and wis this calmag defiency and nitrogen defiency? Couple of lower leaves turning yellow and couple leaves have brown Spot.
Gorilla zkittlez auto day 39 and week 2 of flowering.
I use biobizz Light mix and biobizz nutrients and ph is 6.5.Leaves. Color - Yellow
Leaves. Color - Dark-brown
21 days ago
2
3
Solved
GEESTGROW
Black tips and spots on the leavesI'm having problems with the leaves. I estimate that the plant has about two or three weeks left to live, and I don't want to have issues now. Some tips are darkening, and spots are appearing on the leavesLeaves. Color - Yellow
Leaves. Color - Dark-brown
20 days ago
3
2
Solved
RasendeRollo92
Braune Flecken an den BlätternHallo zusammen,
Ich habe seit ein paar Tagen diese braunen Flecken auf den alten Blättern meiner Pflänzchen. Die Wochen zuvor habe ich gedüngt, allerdings nur mit 1 ml BioGrow, 1 ml BioBloom & 2 ml CalMag von BioBizz — denke eher es ist ein Mangel.
Vielen Dank für eure tips!Week 6
Leaves. Color - Dark-brown
22 days ago
1
5
Solved
CoolGuy123
Why are some leaves forming small brown dots?What are these leaves doing?
It seems to only be these 2/3 and I wonder why they form these brown spots.Week 4
Leaves. Color - Dark-brown
22 days ago
1
2
Solved
FunkyNutz
New grower with questions about burnt tips, browning/scrunching leaves and some pale/yellow spots!I noticed Quick One had issues with burnt tips and discoloration by the end of week 1 and 2, what could've been the issue?
Apple Fritter is looking sick, brown spots, what is that?
Easy Bud and Quick on have slight yellow/paled spots on their leaves, only 1-2, is that normal?a month ago
3
3
Solved
Rogar13
I wanted to ask if you think this plant has mold or if it's just a major deficiency due to a blockage. I have an indoor plant next door with some plants growing with dark spots, it's in my previous question. Sorry for giving more information, I don't know what would help.Leaves. Color - Dark-brown
Other. General questions
a month ago
1
Solved
Lapaluma420ohe
Verfärbte BlätterVerfärbte und teilweise vertrocknete Blätter bei meiner Autoflower in Woche 9. Nährstoffmangel, Nährstoffüberschuss, zu viel Licht? Grobe mit biobizz biogrow, biobloom und topmax.
Woran könnte es liegen?Leaves. Color - Yellow
Leaves. Color - Dark-brown
a month ago
3
3
Solved
einamio
First time DWC, day 70, 3 weeks in flower. Nasty rusty spots appear on lower leaves. Is this CalMag or else? Please help understand and fix, thank you :)I'm using TA Tripart, current EC is 1.6 - ph 5.5-6.5. Everything was smooth until week 10. Two weeks ago I started adding Plagron Power Buds and Green Sensation. Yesterday added CalMag to see if it helps, but it doesnt seem to... She drinks a lot, ph mostly goes down, EC statica month ago
7
7
Solved
XanHalen
Progressive rusty spots on leavesbeen upping calmag .5 each feed, still getting worse, if not calcium deficiency... what is it?
should i keep upping calmag? running 2ml/gal currently.
bud development is still good, not stunted, good structure and trichomb production, great smell.20 hours ago
18
10
Solved
krewgrew
Spots on leaves, dying leaves, afraid of bud rot later. Last grow same plant-similar problems in the end bud rot. SleepyJoe Strain.I was advised 10 days ago that my plant was overfed.
Since then it has only been getting 6.5 water and unfortunately new problems are starting to appear.
100% organic soil
biobizz fertilizer, using the manufacturer's recommended "all-mix".
Their environment is consistently perfecLeaves. Tips - Burnt
Leaves. Tips - Die
Leaves. Color - Dark-brown
3 months ago
6
3
Solved
JSanchezz
could this be due to the PH being too low?I watered 3 days ago with PH 6.3 Ruoff was 6.0
today watered with PH 6.6 runoff was 6.1
Can the brown spots come from the wrong PH ?
fertilizer is full BIO BIZZ CHEEMA, worm humus and mycoriza
what would you recommend to do ?Leaves. Color - Dark-brown
3 months ago
6
8
Solved
tangie
Yellow & brown spots in 2nd and 3rd week in coco-perlite nursery cup. What am I doing wrong? Fed until 20% runoff (extra), strained. Smth with roots?2nd grow in 70/30 coco-perlite mix* & very similar issues w. yellow/brown spots in weeks 2-3, then stabilizes.
*CalMag & pH buffered 6h @ 0.5mS, pH5.8, strained** & seed planted.
Feed:
W1: **Strained sol. + water 70/30, pH5.8
W2: AN M+G+B 1-1-1 + Simplex CalMag Plus 0.4mS
Help3 months ago
9
6
Solved
BoboLacetti
help in Hydro RDWC/DWCHello, my plants are now about 4 weeks old. The leaves droop and curl. The spots on the leaves are increasing. Is the PPM value too high? It's 1000ppm tds
They grow in an RDWC system with top feed. The top feed is permanently switched on. Can that lead to problems?Leaves. Curl down
Leaves. Color - Dark-brown
Roots. Color - Brown
3 months ago
1
2
Solved
yoinky_sploinky
Brown/yellow/purple leaves inThis started out as brown spots on big fan leaves and has turned into what you see on the pictures. I've been ignoring the discoloration until I was greeted by some wilted, dead leaves on plant #2 today.
I'm not worried at this point, just really want to know what's happening4 months ago
2
2
Solved
bfcuk
I have noticed brown spots on a leafes, what is it ? overdose ?Leaves. Color - Dark-brown
4 months ago
3
5
Solved
tangie
Dark purple areas on leaves — genes or environment/feeding problem?What the heck is this? Is it just purple genes or a stress/deficiency or a combination of multiple factors?
I have checked three visual cannabis plant health guides, and did not find a single issue which looks like this. Maybe a combination of 2 factors, but I'm not convinced 😐4 months ago
6
6
Solved
TschupZ
Possible lockout, what could've caused it, all 3 get the same water & feedingHey, i'm new as grower and really glad about any tipps
I got some rusty spots + pale looking, tested the runoff and need help reconstructing on what went wrong
IN: 2l Osmosis + 0,6ml calmag + ph down 7 - 6,5
-Ph: 6,5
-ec: 540
OUT: ca 200ml
-Ph: 5
-ec: 630Leaves. Color - Dark-brown
Setup. Strain - Autoflowering
Feeding. Deficiences
2 months ago
5
4
Solved
Peweez
Could someone help me to identify the issue my plant has?This girl isn't looking healthy anymore and I need to figure out why. What I did: I topped her pretty early but she recovered well (you can see it in my grow diary). A week later I transplanted her from 0.5L pot to her final autopot 14L. After that she had a hard time recovering.Leaves. Color - Yellow
Leaves. Color - Dark-brown
2 months ago
2
3