The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
cal and mag canna coco
Smokeyboar
started grow question 5y ago
Leafs I think its cal and mag but unsure. If it was how do I correct it. Do I say flush with 10 20 liters and then give it 1 mill cal and mag per litrr all canna nutes I use
Solved
Leaves. Color - Dark-brown
likes
GMSgrows
answered grow question 5y ago
About 3 weeks left, I really wouldnt worry to much. If your still watering at 5.9 I would increase to 6.3 for this stage of flower. Cheers
likes
Complain
Selected By The Grower
Similar Grow Questions
Solved
Netherman
Girl scout cookies auto
Hey guys can you tell me what is the problem here ? Is it too much fertilizer or too less ? I'm using plagron and plagron light mix soil. I can't check pH because I don't have EC meter :( they're in pre flowering state I gave them 1/4 grow feed and 1/2 flowering feed
Leaves. Edges burnt
Leaves. Tips - Burnt
Leaves. Color - Dark-brown
4y ago
2
2
Solved
surhaze
AYUDA! Hojas con puntos negros/marrones
Algunas hojas de mis plantas comenzaron a presentar estas manchas, son como puntos marrones / negros y no se que puede ser :( Hongos, carencias por ph incorrecto? ayuda!!
Leaves. Color - Dark-brown
5y ago
3
3
Solved
GoldenWeedGrower
Brown leaf veins
Hi Guys, please can you help me in understanding what is going on with this girls ? I don't have a diary for her but I can answer to all your questions trying to fix the problem. Here the pictures.
Leaves. Color - Dark-brown
3y ago
4
2
Solved
CRIM_mir
Day 46 NL Auto: Multiple Leaf Problems Developing after Possible Nute Lock and 2x Flushing — Should I feed again @ lower TDS? What’s wrong?
Hi growmies! Wks 3-5: overfed 3 plants Wk 6: TDS after plain h20 1800-2300ppm; 2 flushes w/ gallon h20/plant Wk 7: TDS readings 500-800pp, but 1 plant showing multiple types of leaf problems I thought I fixed it, but now I don’t know what’s up or what to do? Thoughts?
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Mottling
5y ago
5
3
Solved
Havingago
Suffering seedlings
Seed 1 is suffering and both plants probably stunted. Should I let these dry up then give a full dose (canna schedule) of coco ab and some cal mag?? Thanks in advance 👍
Week 4
Leaves. Color - Dark-brown
6y ago
5
4
Solved
Xylon
Dark spots starting after feeding. Concern? CalMag, first time feeding with more nutes, so it might be nute burn yea but is it a concern. It started moments after watering, or that's when i noticed it. On a few leaves. Earlier on i cut lower buds and did some defoliation
Week 12
Leaves. Edges burnt
Leaves. Color - Dark-brown
Feeding. Chemical composition
5y ago
1
Solved
DaBeers
By looking at the pics does anyone have an idea what's up? This started 2 weeks ago after a suspected low Ph watering with (FF Big Bloom) but I'm new so not sure. First I flushed her then over the last 2 weeks have given her some CalMag+, Molasses, FF Grow Big, and Epsom salt
Week 7
Leaves. Color - Dark-brown
Feeding. Deficiences
4y ago
3
3
Solved
Schlurpypurpey
First time growing/Need help in late flower
Over the last 9 days my plant has gone from happy and healthy to sugar leaves pointing straight up near the top of plant and drying and curling up on the lower levels. Is this from too much light or did I over feed late in flower? First grow/ no diary. Can I save or do I chop?
Leaves. Curl up
Leaves. Dropping off
Leaves. Color - Dark-brown
10mo ago
7
3
Solved
XanHalen
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.
Week 7
Leaves. Color - Dark-brown
Other. General questions
Feeding. Deficiences
8mo ago
18
10
Solved
rosemary420
Is this a nutrient burn?
What should I do?
Leaves. Color - Dark-brown
5y ago
3
2
Solved
moswald14
leaf tips are dying back, what is the cause for this?
leaf tips are dying back, what is the cause for this? leaves are curling and twisting too, could it be from too much light?
Week 4
Leaves. Edges burnt
Leaves. Color - Dark-brown
3y ago
1
5
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.
Week 6
Leaves. Color - Dark-brown
1y ago
4
3
Solved
Misanthrope
Dry brittle leaves
Discoloured older leaves curling up at the edges and turning dry and brittle. I think my problem is over or under watering. I've been very careful to avoid overwatering so I'm leaning towards the latter but what I've read online suggests dry/brittle means overwatering. Thoughts?
Week 4
Leaves. Curl up
Leaves. Color - Dark-brown
4y ago
3
4
Solved
Growit2321
New growth problems
Is this a calcium deficiency? Noticed it the worst on the newest growths I’ve got slow growth as well. At first i thought it was bugs but then I noticed darkening it leaves and more spots showing up even after checking for eggs( none found)
Week 3
Leaves. Edges burnt
Leaves. Color - Dark-brown
5y ago
1
2
Solved
Kommandant666
3 identical plants, 3 separate issues... Help?
3 girls, same strain, same schedules, same nutes. No Pests. All have different issues. 1 = yellowing/brown spots, low terpene but good bud growth, 2 = Low terpene production, 3 = Skinny buds, normal terps Any ideas what could be causing them?
Leaves. Tips - Die
Leaves. Dropping off
Leaves. Color - Dark-brown
3y ago
3
5
Solved
burnoutdev
Light green patches on many leaves
Hey, few days before I noticed light green patches on leaves and now it's visible on more leaves. I noticed it only on large leaves now. What can be a cause of this? Also, I underwatered plant these days and maybe this can be a cause?
Leaves. Color - Dark-brown
Leaves. Other
6y ago
2
2
Solved
Luke123
Leaf problems
Just started to have problems with my leafs 2nd week in flower . I know I had some calmag issues but thought I got on top of that, don't really want to be putting to much calmag in flower as mine is 4/0/0 Any knowledge is priceless thanks girls and guys
Leaves. Color - Dark-brown
5y ago
1
3
Solved
Draxel
P deficiency canna coco
My Coco runoff Is coming Always less at every runoff.The EC just goes lower by Little step,like 40 us/cm,like 0,4 EC less each runoff and I am experiencing P deficiencies in lower leaves.Why? If I put more volume of fertigations It slowly ramp up though.
Week 1
Leaves. Color - Dark-brown
4y ago
1
1
Solved
Habosabin
Brown spots with slight yellowing
Hello gromies. I'm seeing some slight yellowing and brown spots on my fan leaves. I've been bottom feeding so maybe it's a lock out issue with calmag. I flushed with tap to get some run off. Any suggestions?
Week 6
Leaves. Color - Dark-brown
5y ago
1
1
Solved
W3tWeed
Thoughts?
Can someone confirm the brown spots are a calcium issue, What are your thought on the brown tips?
Week 11
Leaves. Edges burnt
Leaves. Color - Dark-brown
5y ago
2