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
Calcium deficiency?
GreenCosmosstarted grow question a year ago
Saw this little brown/yellow parts today.
She is in BioBizz LightMix Soil and gets 0.3ml/L BioBizz CalMag 3x per week.
pH is above 6.5 .
Today I gave her 1ml/L CalMag.
Was this the right choice?
Is this a calcium deficiency?
Solved
Leaves. Color - Dark-brown
Feeding. Deficiences
likes
Robertsanswered grow question a year ago
This is calcium deficiency and likely due to ph getting too high. Likely need to increase feed amounts
Storkanswered grow question a year ago
I'm not sure if it's calcium because it forms from the edges and makes lines, which seems more like PHFluctuations
1 like
Complain
Similar Grow Questions
Solved
Edenganj
Leaf discoloration. 5 weeks oldI transplanted these girls 2 days ago and have started them on a new nutrition. I’ve noticed some discoloration on one of the leaves today almost sure it’s the nutrients. Can someone help me figure the best thing to feed my plants? Thank you (nutrition diagram on my first diary)Leaves. Curl down
Leaves. Color - Dark-brown
4 years ago
4
3
Solved
PapasGrow
Which pests do this?Exactly what pest does this kinda damage? I have my guess, but wanna get other growers' opinion on this type of yellowing of leaves and brown spots. 6 weeks into veg. It started very early on at bottom leaves, once I trimmed them this brown spots appeared on top growth.Leaves. Color - Dark-brown
Other. Bugs
4 years ago
3
7
Solved
CastlesMadeOfSand
Light schedule/curling tipsHi guys
I w move her outdoor the next month- when here in italy we have 15h 30m day length.I don't know if reduce hours slowly when i have to move her outdoor..any suggestion?Then she start to shows some curling tips on the leaves..
It isn't overwatering
Maybe n deficiency or tox4 years ago
1
1
Solved
Seandawgemous
Nute Lock??? What would you do?i'm looking at the leaves and seeing some different types of nute defficiencies and thinking it could be nute lock.
So i've flushed to see what happens and will investigate afterwards. Am I right?
would you guys flush this from now and for the rest of flowering??Week 10
Feeding. Deficiences
4 years ago
1
2
Solved
IloveLED
What is this!?Hello there. I have, as you can see a bit of an issue regarding my plant. What is this? As you might see, the lower leaves seems ok, and that concerns me even more. I have flushed her properly and then gave her adequate amounts of feeding. At first I thought it was lack of P.Leaves. Color - Dark-brown
4 years ago
2
1
Solved
Sk1nR
Rust on leavesHi everyone. I've discovered rust spots on my leaves. I can't tell if it's fungal or nute burn, the rust doesn't seem to be coming off on my fingers which I think is a good sign?
Does anyone have an idea of what it could be and whats the best 'next step' to take?
Thanks IA ✌️Leaves. Color - Dark-brown
4 years ago
1
2
Solved
Maryjane23
CarenzaCiao ragazzi cosa dite una carenza di N??Week 9
Feeding. Deficiences
4 years ago
4
3
Solved
Grow3rPT
Será uma deficiência de cobre?Ola, sem ser a questão que já não consigo subir mais os leds e as plantas já estão a mostrar sinais de stress por causa da luz.
Agora apareceu me uma das plantas assim, com as pontas amarelas mas a ficar maior.
Fiz um flush para limpar, pois penso que seja nutrientes a mais.Week 6
Feeding. Deficiences
4 years ago
13
6
Solved
CastlesMadeOfSand
Purple stems-curling tips leaves point downGuys the sides stems seem really purple!even the central stem..
Why? magnesium deficiency?or genetics?
And that leaves tip pointed down; they are a problem..
Maybe N deficiency?(due the early preflowering for the wrong light cycle) Thanks :)4 years ago
2
2
Solved
CastlesMadeOfSand
Same as previous, don't want to close grow question but now i see i cant reply.what i have to do flush?and then add more vegfertilizer?until now onlydidn't want to close i just want to meke replies to the users who respond me!sorry
i never feed her,never,until now,so why N toxicity?soil is biobizz lightmix
But know i see the new leaves coming and they aren't curling so in as good sign maybe the the new pot soil aredoing good?Week 3
Feeding. Deficiences
4 years ago
2
2
Solved
Mr_weed_pt
Nutrients deficientOne of my plants is showing some marks on the leavesWeek 7
Feeding. Deficiences
4 years ago
7
4
Solved
Mr_weed_pt
Nutrients deficientSome brown marks on the leavesWeek 7
Feeding. Deficiences
4 years ago
2
2
Solved
Medi_K8
Browning of plant 1 lower leavesGuidance please, On my 1st plant it looks like it has a pH issue however my other plants don't have any signs of a problem. I don't have a pH meter but have test strips and I have not seem an issue with my water. Is the browning on some of the lower fan leaves normal?Week 8
Leaves. Color - Dark-brown
4 years ago
2
2
Solved
buddhi_coop
NutrientsWould you all use these together or am I supposed to choose one or the other? Week 4 of floweringBuds. Other
Feeding. Deficiences
Feeding. Other
4 years ago
2
2
Solved
Growernotshower1
Deficiency?Anyone seen leaf damage like this before? 6 weeks into veg in FFOF. A few fungus gnats but no real infestation. Not adding any nutes yet. Really concerned as the plant is looking less green and more yellowy than it did last week.Week 5
Leaves. Color - Dark-brown
4 years ago
2
1