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. For details please see Privacy Policy
Accept
Nutrient lockout, ph imbalance or nutrient burn?
TheNoobDudestarted grow question 4 years ago
Unfortunately I don't have a ph meter, so my best guess is one or more of these problems: nutrient lockout, ph imbalance or nutrient burn.
The first 3 photos are from an Auto Northern Light and the last 2 are from an Auto Jack Herer.
like
smoke24answered grow question 4 years ago
A ph meter is an absolute must have. Without knowing the ph its all a giant gamble, you have no way of tracking ph shift, and thus have no way to accurately adjust ph. You can get a good meter on amazon for about 45 bucks. Happy growing.
Similar Grow Questions
Solved
SAC87
I am on day 53, I know it’s normal for plants to yellow later in flower, mine turn yellow very early like week 7. Some people way later and theirs are still very green. I recalibrated my ph pen week 6. Happened in under feeding too. Makes bud look awful. What am I doing wrong??Week 15
Leaves. Color - Yellow
6 years ago
1
6
Solved
Frosty_farm
What is the limits ( humidity and temperatures) for my auto white widow?Week 2
Leaves. Color - Dark-brown
6 years ago
5
4
Solved
TheMan
The leafs started to look yellow in the middle when I checked on them today. They looked fine to me yesterday so I guess this happened in the past 24-48 hours, not sure why. It can be seen on Day 12 pictures. Is this normal or I should be worried?Week 2
Leaves. Color - Yellow
6 years ago
5
3
Solved
Kaboose13
The last few days I had 3 plants start not looking so hot. The 3 pictures are the 3 plants when I got home today. I haven't really encountered deficiencies, if it's even that. I'm watering at 5.8 and last I checked the runoff a 2 days ago it was 6.8. Any ideas?Week 3
Leaves. Color - Dark-brown
6 years ago
2
2
Solved
SamCan
Yesterday i see new yellow leaves (plant 2). I have just checked them again and on the second plant the two small leaves are now brownish. What could that be? I water every two days and the soil is not wet but slightly moist. The other plant 1 grows wonderfully.Week 1
Leaves. Color - Yellow
6 years ago
2
3
Solved
ItsLegalInMyHouse
Hi all!
I was checking on my plants and noticed one of them is showing yellow/brown spots in some the top leaves, only showing on 1 plant but I’m nervous it’s leaf septoria?? The plant is in week 10 and is my last pic on week 10 diary. Does anyone know what this could be? :)Week 10
Leaves. Color - Yellow
6 years ago
3
3
Solved
Marceleco
Hey guys, I have noticed that some of the upper leaves are turning yellow. I read that it may be because of heat stress or light burn but I'm not entirely sure and just wanted to ask what i can do to stop other leaves from having this issue. Anyways, what do you guys think?Week 15
Leaves. Color - Yellow
6 years ago
1
1
Solved
BazookaJoe
I have lots of yellowing on the lower leaves of one plant. After reaserching I think it’s a nitrogen deficiency. Also today I’ve noticed lots of teeny tiny white/clear bugs! I’m super anxious about it, thinking my plants are goners. Any idea on what they are?Week 10
Leaves. Color - Yellow
6 years ago
2
3
Solved
Noela
I have been having trouble with my leaf tips and edges appearing yellow and then turning brown. At first it was just the bottom leaves that were affected but now more of the top leaves have the burnt appearance just not as extreme as the lower leaves. What can I do to fix this?Week 6
Leaves. Edges burnt
6 years ago
5
Solved
GrowGermany
Should i worry about some discolored leaves?
(picture of some leaves in week 7)Week 7
Leaves. Color - Yellow
6 years ago
3
Solved
Experimentgreen
Hey all, so my pistils have had discolored and some dry/shriviled looking tips for a few weeks now. This seems a bit premature to me. You can notice in the 7th pic this week and several the weeks before. Has anyone experienced this, otherwise any possible ideas it could be?ThanksWeek 20
Leaves. Edges burnt
6 years ago
7
3
Solved
OutForReal
Hello ! What so you think about my issue diagnosis ? What would be the best thing to do to treat her ? She was supposed to stretch one more week but she's flowering : what are your feelings about the incoming week ? Thank you for your input 😁✌️🏼Week 7
Leaves. Color - Yellow
6 years ago
1
3
Solved
420pete
Any ideas to what might be causing these leaves to yellow/die? Only reasons I can think of are nutrient lockout, having the lights too close (although I've heard with CFLs theres pretty much no such thing as too close) or possible having the heater running, or constant fan airWeek 3
Leaves. Color - Yellow
6 years ago
5
7
Solved
ACTreeC
Hi, can someone look at my picture called F57? Are those yellowish parts 'nanners'? They sure look like it. And if so, what does this mean?Week 14
Leaves. Color - Yellow
6 years ago
1
1
Solved
TheIceCreamParlour
Check out my week 7 update for more info. Only one plant in the tent affected so it's really bugging me?!? Thought it was overwatering. Left them 2 days between feeds and they are bone dry and pots are light. Any suggestions or could it just be a trait of the Pheno?Week 7
Leaves. Color - Dark-brown
6 years ago
1
4
Solved
Aliatif
What should ı do for these brown spots? Ph is ok, fertilizer is ok but didint recover. Should ı flush my plant with 6.5 ph water?Week 9
Leaves. Color - Dark-brown
6 years ago
3
3
Solved
Selen
Saw a lot of yellowing in the flowers, not sure if its enough or too much nutrients, or not enough water or its a pest. I was suggested neem oil to get rid of the pest creating those white spots, any other suggestions about how to get her to look healthier and growing faster?Week 6
Leaves. Edges burnt
6 years ago
3
3
Solved
Frosty_farm
Seed started off fine. Germinate well, half inch tap root, placed in 3 gal. pot. 12 hours after she broke surface and that was it. At day 2 no new growth. Noticed the two leaves have brown on the tips. Temps are 75-80, humidity is at 60% and only use 6ph water. Help....Week 1
Leaves. Edges burnt
6 years ago
2
2