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Grow Questions

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MediciGrade
MediciGrade
Rusty brown spots on edges of leaves near top of the canopyI'm not sure if this is nutrient burn or a cal/mag issue (deficiency or lockout), or something else. Anybody know what is likely to be causing this, and how to treat it?
Week 10
Leaves. Tips - Burnt
Leaves. Color - Dark-brown
3 years ago
1
1
Solved
MediciGrade
MediciGrade
Pale green leaves with reddish tips?Stress at the top of the canopy. Is this heat stress, light burn, or a combo? Something else? Temp in the tent hit 92.5 F at one point, but it's been high 80's in the tent and the leaf surface temp's have been low 80's. Light was 14 inches at one point but now 24 inches
Week 10
Leaves. Color - Red or pink
Leaves. Color - Pale
3 years ago
3
2
Solved
MediciGrade
MediciGrade
Any seasoned growers out there able to eyeball the approximate dry weight of this harvest?
Week 20
Buds. Too few
4 years ago
6
4
Solved
MediciGrade
MediciGrade
Nanners? What should I do?Weird growth. Are these nanners? What’s this seed looking thing? What should I do?
Week 16
Buds. Other
4 years ago
2
2
Solved
MediciGrade
MediciGrade
How much/little should I prune?I’ve read a lot of conflicting opinions these last few days regarding defoliation/plucking/pruning. Today is day 21 of 12/12 and my only goal is to prevent white powdery mildew. How many leaves would you take off? RH overnight spikes into the high 70’s if the dehumidifier is off
Week 12
Techniques. Defoliation
4 years ago
1
1
Solved
MediciGrade
MediciGrade
I've been feeding 3 times/day at an EC = 1300 and PH = 6.2. Runoff this morning was ~700 on average. The plants appear to be happy but I'm worried that I'm underfeeding them and its slowing down growth. Should I increase EC? Should I start feeding more often?
Week 9
Feeding. Schedule
Feeding. Chemical composition
4 years ago
2
3
Solved
MediciGrade
MediciGrade
As you can see, one of my plants is a few inches taller than the others. They've all been topped 3 times for 8 mains, but I'm wondering whether I should top the big plant 1 more time in an effort to achieve a more uniform canopy height before flipping to 12-12.
Week 9
Techniques. Topping
Techniques. Main-lining
5 years ago
3
2
Solved
MediciGrade
MediciGrade
Crispy Yellow LeavesInflow EC=1333 w/ PH=5.8 vs Runoff EC=658 w/ PH=6.0. Insufficient nutes due to light intensity? Perhaps my PH meter is inaccurate? Light is 42 inches from canopy or ~600 PPFD. RH 65%, Temp 80 F.
Week 8
Leaves. Veins - yellow between
Leaves. Color - Yellow
5 years ago
1
3
Solved
MediciGrade
MediciGrade
Leaf Symptom DiagnosisThe leaves (pictured with weird wrinkles and crispy edges) are showing some form of stress. Theory is that they were dehydrated from the overly salty medium, but I'd love to hear from a more experienced coco grower about if and how I should intervene to alleviate the stress.
Week 7
Leaves. Curl up
5 years ago
4
4
Solved
MediciGrade
MediciGrade
Brown spots and yellowing pictured above. My best guess is a Cal/Mag deficiency. Was feeding Botanicare Cal-Mag Plus at 1 ml/l up until ~2 weeks ago (friend has been watering while I was out of town). Before I feed her, any advice on what the problem is and how to correct it?
Week 14
Leaves. Color - Yellow
Leaves. Color - Dark-brown
5 years ago
2
Solved
MediciGrade
MediciGrade
Bleu (largest of the 3 plants) is ~14 days behind the other 2. Is such a variance in size & rate of maturation common when growing from seed? Does LST/HST amplify the differences between phenotypes? She's so tall I'm worried about light stress. Should I reduce the light schedule?
Week 9
Other. Mold
5 years ago
3
3
Solved
MediciGrade
MediciGrade
Nute Burn Plan. Lower light to 24 inches and turn on bloom switch. Flush soil with 8 litres of water (PH 6.5) per pot. Questions: will increasing the intensity of light increase plants ability to absorb nutrients, or simply stress them more? Is 8L water/ 10L pot enough to flush?
Week 5
Leaves. Edges burnt
5 years ago
4
3
Solved
MediciGrade
MediciGrade
I’m running a viparspectra 600W reflector series LED 30 inches above these seedlings with only the veg lights turned on. The seeds went in the water 14 days ago and my question is: when should I turn on the bloom lights as well?
Week 2
Techniques. Defoliation
5 years ago
1
1