The Grow Awards 2025 🏆

Chat

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

Recommended

Back to Grow Questions

calcium def?

Getupandgrowstarted grow question 4 years ago

Hi guys just wondering is this the early stage of calcium def? Starting to go brown between veins of older fans.

Getupandgrow

Getupandgrow

Open

Leaves. Color - Dark-brown

likes

Answer

DutchDudeGrowanswered grow question 4 years ago

I think magnesium. if I see it correctly there js yellow between the veins its early stage that's for sure magnesium or not bit I put my money on magnesium 💪🏻✌️🏻❤️

likes

Complain

VeggieTalesanswered grow question 4 years ago

Probably not but to be on the safe side you could use calmag as a preventative, low dose once a week when watering. I use the ratio that’s on the bottle and have no issues

1 like

Complain

Similar Grow Questions

Solved

Braune Flecken an den Blättern Hallo 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!

Leaves. Color - Dark-brown

a month ago

1

5

Solved

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.

Leaves. Color - Dark-brown

a month ago

1

2

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 w 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 week 2 of flowering. I use biobizz Light mix and biobizz nutrients and ph is 6.5.

Leaves. Color - Yellow

Leaves. Color - Dark-brown

a month ago

2

3

Solved

Black tips and spots on the leaves I'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 leaves

Leaves. Color - Yellow

Leaves. Color - Dark-brown

a month ago

3

2

Solved

Leaves keep turning brown and yellow It 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

22 days ago

4

Solved

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 static

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

Leaves. Other

2 months ago

7

7

Solved

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?

Leaves. Edges burnt

Leaves. Color - Pale

Leaves. Color - Dark-brown

a month ago

3

3

Solved

Verfärbte Blätter Verfärbte 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

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

Progressive rusty spots on leaves been 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.

Leaves. Color - Dark-brown

Other. General questions

Feeding. Deficiences

11 days ago

18

10

Solved

Brown spots on leaves? Is this lockout or something else?Can anyone tell me what this might be? Need help identifying plant symptoms

Leaves. Color - Dark-brown

Plant. Other

8 days ago

1

4

Solved

Smoking_Joe_Frazier

Nutrition deficiency or nute solution on leaves during watering?Hi Growmies,during my monitoring routine I found some brown spots on the leaves. Not many but on some leaves the brown spots have become transparent and I can see through the leaves. Any ideas what could have caused the brown spots? Perhaps not enough CalMag? Rest looks healthy.

Leaves. Color - Dark-brown

8 months ago

4

3

Solved

Hello everyone, sorry to disturb but can anyone please help me identify what's wrong with my plants. I've included pictures, and if you need anymore details I am more than willing to share.

Leaves. Edges burnt

Leaves. Dropping off

Leaves. Color - Dark-brown

8 months ago

3

5

Solved

Gorilla_cookies92

Help! is this calcium deficiency?Help! is this calcium deficiency?

Leaves. Color - Dark-brown

8 months ago

2

Solved

Brown Leafs?What is going on here? i saw that my plant got some issues with its leaves. I got my self Bio Bloom from bio bizz my friend told me it could help but it is already day 3 and it did not get better. what should i do?

Leaves. Color - Dark-brown

Techniques. Defoliation

8 months ago

1

4

Solved

Cal-Mag Def?Hi People! So I found those Spots on my Leafs...They are also very dry . Is this a Cal-Mag Deficiency? Week 4 of Veg is about to begin and I was planning to send them to Flower in about 10 Days. Any recommendations on how to manage this properly?

Leaves. Color - Dark-brown

Other. General questions

7 months ago

2

Solved

Nutrient burn? Deficiency?Moby Dick Auto, getting closer to harvest but not there yet. Getting nitrogen abundance? Not to sure how to read this. She's just been sitting in the quite hot sun all day but sche has before, might have overfed bit using biobizz (not noticeably different doses thant usual)...

Leaves. Color - Dark-brown

8 months ago

1

1

Solved

Weed doctors to the rescue Day 44, fb auto, my happy girl developed those dark spots at the top... Is this a Calmag deficiency? Although I'm giving her calmag every feeding. I think there are also first burnt tips. I'm about to water her tonight, what should or should not give her? Thanks for your inputs🙏

Leaves. Tips - Burnt

Leaves. Color - Dark-brown

Leaves. Color - Black or grey

8 months ago

3

5

Solved

Nitrogen Deficiency or Nutrient Lockout?My plants are showing red / purple stems as well as some rust spots in some of the older leaves. Nitrogen deficiency? Or lockout due to too much fertilizer?

Leaves. Color - Pale

Leaves. Color - Dark-brown

8 months ago

3

3

Solved

Help Got two ladies having some problems, all get the same food but only this two have show some problem. Fedding with Advanced Nutrients pH perfect PH 6.3-6.5 eC ~800

Leaves. Color - Dark-brown

6 months ago

1

1