The Grow Awards 2026 🏆 
Nitrogen deficiency, light burn? Calcium?? Which deficiency?
THERMICDESERT11started grow question 4y ago
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.
No clue what’s going on with this, thought it needed nitrogen. Top dress. Some new growth looks good
Solved
Feeding. Deficiences
likes
GMSgrowsanswered grow question 4y ago
It's all ph related my friend. Fix your ph and you will be good to grow... Cheers
THERMICDESERT11answered grow question 4y ago
Thanks you guys. I will correct my soil ph
1 like
Complain
Similar Grow Questions
Solved
Hiphopopotamus33
Possible deficiency?What's going on with my girl? This has been a continuing problem throughout my grow and I'm stumped.Feeding. Deficiences
6y ago
3
Solved
Leonard_Lunte
Leaves turning yellow from the bottom upMy older plants leaves are turning yellow from the bottom up. Its probably a nitrogen deficiency I think, I read that its common for plants in late flower but this one just shot its first pistils. What would be the smartest thing to do to combat this? Thx
Its only on 4 leaves rn6y ago
4
3
Solved
fish_ringer
last week some leaves turned yellow and appeared brown dots (runoff ppm - 752
runoff Ph - 7.2
last time added:
bud candy 2ml/l
big bud 2ml/l,
nirvana 2ml/l,
calimagic 1ml,
micro 0.5/l,
gro 0.2/l,
bloom 0.6/l
ppm 550
watering 2l every 4th day.
after 3 times watering with nutes i give her only regular water.
What's wrong with her?5y ago
2
1
Solved
BigD_era420
Can you guys help me diagnose what disease this is? (week 2 seeding)Leaves. Color - Yellow
Feeding. Deficiences
2y ago
2
3
Solved
savvage61
cal/magRan 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 daysWeek 1
Feeding. Deficiences
3y ago
1
1
Solved
TheChronicHunter
What deficiency is this?Anyone know what deficiency I’m experiencing here? Zn or Mn maybe?Week 10
Feeding. Deficiences
5y ago
2
Solved
Foggedaboudit
N issuesThis girl suffered from N deficiency very early. So I gave it nutes. Nutes gave it N toxicity. So I flushed the soil with ph’ed water. You guessed it, it’s lacking N now. The problem is the pot is still very yet and heavy so I don’t know if I should water with nutrientsFeeding. Deficiences
2y ago
5
3
Solved
buddhi_coop
Seedling DeficienciesHow do I fix a deficiency in a seedling? I’m growing organically so any organic suggestions you have I’d appreciate a lot!Setup. Seedling
Feeding. Deficiences
Feeding. Other
4y ago
2
2
Solved
Mooncat
OverdoseSeems 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
3y ago
1
1
Solved
Moondogz
Suspected Nitrogen DeficiencyNoticed yellowing leaves at the start of Week 3. Suspect nitrogen deficiency. Using Cal-Mag, Alga Grow(NPK 4-2-4), and Power Roots(NPK 0-0-2) at half the recommended dosage. PH is measured at - 6.5.Leaves. Veins - yellow between
Leaves. Color - Yellow
Feeding. Deficiences
1y ago
2
2
Solved
AlienScrOG
Ppm ECPpm for Idro? ... 750ppm 1.5 EC... Water start 500-600ec .. fert up ti 1500.... Is so much .... If i want more Stretch but with dense grow .. is possibile ? ... Thanks so much all !!!!!!... I use h2o2 and acid solforic. . but Is not very stabilized
pH.. what u think ?5y ago
2
2
Solved
iopiopiop
Bud growth in flushThis plant is due harvest very soon. I plan on harvesting my plant as soon as the weather conditions are better. Untill then I have her on a flush and either under the sun or the growlight. Lots and lots of potassium defficiencies. My question: Is the plant still producing bud?5y ago
2
Solved
WulfBlud
Add CalMag or Manganese? Still slightly discolored and veiny leaves on week 6Calcium or Manganese deficiency? Last week had what I thought was early calcium deficiency. Gave it a dose of CalMag but now not sure if it’s still Calcium or possibly Manganese.
I do mean manganese but I realize it could be a CalMag or Manganese deficiency as well.3y ago
2
Solved
Marlboro
Very high ppm on exitHi. Today first time decide to put 3-4 L of water and look at ppm out. Some growers advise not even check it, but i did and here it is: Fresh water only. In - 48ppm; out -8000ppm. But she looks good. Temp 25; humidity 59% CO2 - 392ppm. Any advice or explanation? Thanks in advanceWeek 3
Feeding. Deficiences
3y ago
1
4
Solved
Nick_Frampton
Soil PH needs to be increased. What do I do?Hey everyone. I've noticed my plants are getting purple stems and not really growing as much as other plants. I checked the soil PH of them and the big plants have a PH of 6.1 and the small ones have a PH of 5.7. What's the best and easiest way to increase my soil PH to 6.5?
TyOther. General questions
Plant. Stem - Red or purple
Feeding. Deficiences
4y ago
2
8