The Grow Awards 2026 🏆 
Ph problem?
Aonjacktallbeckstarted grow question 5y ago
Is this a ph problem or something else? My meter doesn’t seem to be accurate. I’ve been feeding top crop veg once a week and ph 6.3 (soil), my run off was a bit high, a gave just plain water (ph 7) but no help. Photos from two plants. Heeelp
Open
Leaves. Color - Yellow
Leaves. Color - Dark-brown
Feeding. Deficiences
likes
Answer
HighAltitudeOrganicsanswered grow question 5y ago
1. Calibrate your pH pen/meter
2. PPM is just as important, what’s the PPM of input and runoff?
likes
Complain
Similar Grow Questions
Solved
GrowP4Y
What's the problem?Hi guys, basically for the last few days the problem hasn't varied too much but I can't figure out if it's my light or if it's coming from somewhere else. Some of my leaves are curling with stains either on the leaf or like a burn on the tips.Leaves. Twisted
Leaves. Color - Yellow
2y ago
6
7
Solved
Italy_Grower
The leaves are yellowing, some are turning purple.The leaves are yellowing, some are turning purple, maybe it's normal or maybe not, I don't know. If anyone could give me some suggestions. I decreased the light intensity to 75% because unfortunately I can't raise the lighthouse.Buds. Not fattening
Leaves. Color - Yellow
Leaves. Color - Red or pink
2y ago
6
5
Solved
buddhi_coop
Leaf DeficiencyWhat’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
SirSmokeALot333
Yellow tipsHey guys
Using Batmix from Plagron Till now Day 34 no nutes just Rhizotonic and Great white with every 2nd week humid Acid from Green Buzz Liqiuds. All of them showing a signs of burn or lockout ?
Lights sets up to 100 % at maybe 60 cm away from the canopy .Leaves. Curl down
Leaves. Color - Yellow
4y ago
1
1
Solved
ElectricWizzer
New growth and top leaves have some discoloration. Could it be light related, or maybe a zinc deficiency?She has been flowering for about a week now and showing some pale spots. At the start of flower I turned the light up from 200w to 300w. Light is currently at about 20" from the canopy. Plants seem healthy otherwise, should I be concerned?Week 4
Leaves. Color - Yellow
5y ago
2
9
Solved
Liam_2020
Soil PH Issues!Started seeing some deficiencies in my plants mainly burnt tips and edges and yellowing...thought nute burn BUT after checking my soil run off the pH was 5.3!
Tap water is 6.8 but what I didn’t realise was after adding nutes it was 5.5! Am I best now flushing with 6.8 tap water?Feeding. Deficiences
5y ago
1
3
Solved
Tektonik80
yellow leavesBlackberry Kush is looking yellow on top. I've fed her twice now and keeps getting worse. Not sure what the problem is.Leaves. Color - Yellow
5y ago
3
3
Solved
Don1daz
Does anyone answer questions on here
Anyon know what's going on with my zkittles auto from fast buds started yellowing on all leaves please helpLeaves. Color - Yellow
Other. Other
Plant. Other
5y ago
2
3
Solved
HAPPYWEEDS
Dark dots in leaves. Lamp burns?I saw this dark dots in leaves but only she has it. She was exactly under spider-farmer sf1000 at 30 cm. Now I moved to other softer light at 40 cm. What do you think? Lamp burns? They're dry and curl up. Some images are edited for better appreciation but you have also originals.Leaves. Curl up
Leaves. Color - Dark-brown
Leaves. Color - Mottling
4y ago
4
3
Solved
BLAZED
Yellowing leaves, brown spots, tips pointing down and are brittle and burnt,I got some leave problems.
signs:
- Leaves turning lightgreen/yellow.
- Tips of the leaves are pointing/curling down and are brown and brittle.
- Some leaves have a reddish colour, especially the leaves on the buds.
- Some leaves got brown spots on them.
Whats could be the cause3y ago
1
4
