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
Calmag issues
Ichabod1905
started grow question 4y ago
Hi all. Just a quick one. Do I need to use calmag on every watering using a sf4000. It's my first time using a led. Thanks for any advice. 👍🏻👍🏻
Solved
Feeding. Deficiences
likes
Roberts
answered grow question 4y ago
Depends If coco is present in your substrate. If so then I would use it more often then not coco absorbs cal mag.
likes
Complain
Selected By The Grower
Similar Grow Questions
Solved
CBDnurse
yellow leaves
my lemon haze doesn't want to grow anymore, it is indoors and gets the same treatment as my other plants .. yet it is still in its growth process, does anyone know what ion deficiency they could have?
Plant. Other
Feeding. Deficiences
5y ago
2
4
Solved
savvage61
cal/mag
Ran into a cal/mag def on 1/2 of scrog week 4 is week 2 too early to add tsp of cal/mag which would be better cal-mag 1-0-0 or cal-mag plus with iron 4-0-0 ? image is week 5 post flush of prior grow prevent this on current grow week 2 starts in 2 days
Week 1
Feeding. Deficiences
4y ago
1
1
Solved
maelxich
Last week she started lightly fading yellow on a few of the smaller, lower leaves. I saw claw down leaves and figured N tox so I did ph 6.5 only for a few waterings. Now she’s turning totally yellow with some burn marks. Not sure what happened or what to do!
Week 6
Feeding. Deficiences
4y ago
5
Solved
BobtheBUDbuilder
Whats going on?
So.. 6th week into it. My leaves have various brown spots and yellowing spots in no particular spot. There is some browning on leaf edges. Also tips are up. I am thinking cal mag and to much heat. But not sure. I lifted light up and so far nothing. Also started adding cal mag .
Week 6
Feeding. Deficiences
3y ago
2
3
Solved
Mooncat
Overdose
Seems i burned my Plant by trying to adjust the PH with to much PH+ from Biobizz...( and a bunch of Nutes wich lowered it in the first place) Watered it yesterday throughout so flushing ,,could,, be a risk. Leafes clawing new ones to bright... Any suggestions ?
Leaves. Curl down
Plant. Twisted
Feeding. Deficiences
4y ago
1
1
Solved
PurpGod
Leafs curling down
Leafs curlded down after I raised the light intensity to full 150w capacity light is 33in away from plant and water with mykos wp 1st time. Temps got a little high 82-84. So I dimmed the light to about 85% tents temps down to 79-80°f Soil roots organic, kind soil at the bottom
Leaves. Curl down
Setup. Lighting
Feeding. Deficiences
6y ago
2
2
Solved
Carbourie
Yellowing leaves and strange spots
Any idea what could be going wrong with these Northern lights Auto (RQS) plants in 2nd week flowering? The leaves are now yellowing and there's some strange spots appearing especially on one of the plants. Using Bio Bizz - All Mix soil / 1ML Grow and 1ML Bloom for 2 weeks.
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
1
2
Solved
THERMICDESERT11
What’s wrong with my plant? Root rot?
Growing organically with happy frog mixed with a super soil concentrate. I water them with spring bottle water, ph at 7.7. Recharge every 10 days. Top dress 2-2-2 dry amendments. Plant looks like it has root rot or potassium deficiency. Please tell me what y’all think
Feeding. Deficiences
5y ago
2
2
Solved
GR0WER
My babies are ill...
What is it? I'm feeding my flowers with 75% amount of nutrients already (75% of recommended) and they showing me this... Feeding: - Flora TRIpart x 75% - GHE 'SeaWeed' - 5ml/l - O.G.Bloom - 0.2ml/l - Advanced PK - 1ml/l Please, help.
Week 7
Feeding. Deficiences
3y ago
3
5
Solved
GhettoStyle
problems with clones!
Friends, tell me what's wrong with the plant! I don't understand it's under-feeding or over-feeding! At first I thought it was a cal-mag deficiency, then I saw a purple stem and thought it was a phosphorus deficiency! Now I don't know what it is anymore! at the very beginning it
Leaves. Color - Yellow
Setup. Clones
Feeding. Deficiences
3y ago
1
7
Solved
Rollex420
Your opinion?
Today flushing the wedding cake i was thinking that the problem was an excess of nutrients, but instead water was quite clean, around 1100ppm at the first drain, after several flushes water is now on 600ppm. I also raised the lights.. I still do not understand 🤔
Leaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
4
2
Solved
kizdog
Tiny Brown/Bronze spots
My Dr. Lemon plant has a few orange/bronze spots on some of the middle/upper leaves, Looks like a calcium deficiency, but I'm not sure. Anybody have an idea of what this could be? Feel free to check out my diary on her for more context!
Leaves. Color - Dark-brown
Other. General questions
Feeding. Deficiences
4y ago
1
1
Solved
buddhi_coop
Leaf Deficiency
What’s going on with my leaves? Looks like the start of a deficiency.
Leaves. Curl up
Leaves. Color - Yellow
Feeding. Deficiences
4y ago
1
1
Solved
Michael1234
too many nutrients?
I am asking for advice, is it possible that my plants got too much fertilizer. I watered them in the fourth week, I gave them 0.5ml per liter once CalMag, Bio-Bloom, TopMax, Fish-mix,Biobizz then during the 7th week 1 ml per liter CalMag, Bio-Bloom, TopMax, Fish-mix,Biobizz
Week 6
Feeding. Chemical composition
Feeding. Deficiences
4y ago
2
4
Solved
kira90
notice any nutrient deficiencies or toxicity ?
Hi guys, I was wondering if you could tell me if you notice any nutrient deficiencies or toxicity auto 25° /55%rh / ts1000 distance 60cm 75%power 40 dli (photone) feed two days ago and still wet with 700 ml 0.5ml bllom Budcandy 1ml 1ml rhinoskin 0,5 calmag Ph 6.4
Other. General questions
Feeding. Deficiences
2y ago
1
3
Solved
Dillsnills
Should I use distilled water instead of tap water and jus add nutes? I have a feeling my tap water is a little on the hard side 354ppms
Is distilled water better to use than tap water? My tap water reads 354 ppm, I have a feeling it's too hard so what I'm wondering is would I be better off using distilled and add nutes rather than using tap water? The pics ik I am feeding cal mag an some N next watering.
Other. General questions
Setup. Strain - Autoflowering
Feeding. Deficiences
5y ago
7
8
Solved
BettieBee
K deficiency almost wiped out this plant. What do I do now?
I’m somewhere between 2-3 weeks until harvest time should be. It’s day 80 from seed on this autoflower. Had a bad potassium deficiency that I didn’t figure out quite in time and I’m not sure if too much damage has been done. What should I do?
Week 12
Feeding. Deficiences
3y ago
4
4
Solved
ezyields
Should I use a pH up -product?
After mixing nutrients with my tap water, the pH of the mix is around 5.5. Should I use a pH -up product? Plant is showing a slight nitrogen deficiency. My tap water base pH is almost 8.0, but the Biobizz nutrients bring it way down. I am using 50% of the recommended dosage.
Week 7
Feeding. Deficiences
5y ago
6
5
Solved
Medes
Yellowing
First timer here,past week i have had issues with lower leaves yellowing and getting brown spots and falling off. Went from veg state to bloom, the light scheduling got messed up for a week 15/9. I do not know if lockout because of ph imbalance. Light is 12/12 now
Week 2
Feeding. Deficiences
3y ago
1
2
Solved
Splifranger
Monster bud mix nutes ( lack of nitrogen)
Does any got some experience with monster bud mix by zammi with photoperiod strains? I like the nutes but i think they dont last long enough to feed photoperiods am lakking nitrogen in flower stage with autos no problem now the grow is staggerd a bit. And liquids i need to mes ph
Feeding. Deficiences
4y ago
2
4