Sad droopy plants

KonopCh

KonopCh

Well-Known Member
I grow in 70/30 coco/perlite in autopot. pH is in check, I set it at 5.7 and let it drift to 6.3. They're under 220W DIY COBs. Light is 30-40cm above plants, I have 6 COBs at 37W. Temperature when lights on is 25-29°C, when lights off it's never under 19°C.

4 hours before lights off they're droopy. Then they go to sleep for 4 hours. After lights on they're still perfect... for next 15 hours?
I didn't notice that before on previous plants.



Second problem is... Calcium?

 
N

n0thing

Well-Known Member
You have Cal/mag deficiency but what's causing it is the question. What nutes are you using and what's your feeding schedule look like? You need to be adding Cal/mag with Coco.

Your plants are showing signs of heat stress, do you run co2? Also what's your humidity?
 
KonopCh

KonopCh

Well-Known Member
n0thing said:
You have Cal/mag deficiency but what's causing it is the question. What nutes are you using and what's your feeding schedule look like? You need to be adding Cal/mag with Coco.

Your plants are showing signs of heat stress, do you run co2? Also what's your humidity?
Click to expand...
I am using 2ml Ca/Mg, yesterday I bumped to 2,5ml Ca/Mg per liter.
Humidity when lights on 50-60%, when lights off 60-70%.

I don't think it's heat stress as I have under 30°C temperatures.
My biggest problem/fear is droppy plants...
 
N

n0thing

Well-Known Member
KonopCh said:
I am using 2ml Ca/Mg, yesterday I bumped to 2,5ml Ca/Mg per liter.
Humidity when lights on 50-60%, when lights off 60-70%.

I don't think it's heat stress as I have under 30°C temperatures.
My biggest problem/fear is droppy plants...
Click to expand...
The droop is moisture stress that I'm assuming is from the heat. If you're not running co2 and have poor ventilation then 29c can be too hot. It's either that or you're over/under watering.

Keep feeding Cal/mag throughout your grow with Coco.
 
X7GrowerX7

X7GrowerX7

Well-Known Member
KonopCh said:
I grow in 70/30 coco/perlite in autopot. pH is in check, I set it at 5.7 and let it drift to 6.3. They're under 220W DIY COBs. Light is 30-40cm above plants, I have 6 COBs at 37W. Temperature when lights on is 25-29°C, when lights off it's never under 19°C.

4 hours before lights off they're droopy. Then they go to sleep for 4 hours. After lights on they're still perfect... for next 15 hours?
I didn't notice that before on previous plants.



Second problem is... Calcium?

Click to expand...
How often do you feed/water?
 
KonopCh

KonopCh

Well-Known Member
n0thing said:
The droop is moisture stress that I'm assuming is from the heat. If you're not running co2 and have poor ventilation then 29c can be too hot. It's either that or you're over/under watering.

Keep feeding Cal/mag throughout your grow with Coco.
Click to expand...
How's that possible? I have same conditions in all grows, but only happened to this now.
No, no CO2 here.

Moisture stress from heat? At 25°C? What does that mean "moisture from heat"?
 
N

n0thing

Well-Known Member
KonopCh said:
How's that possible? I have same conditions in all grows, but only happened to this now.
No, no CO2 here.

Moisture stress from heat? At 25°C? What does that mean "moisture from heat"?
Click to expand...
Moisture stress caused by high heat, google moisture stress if you want a full explanation.


" 4 hours before lights off they're droopy. Then they go to sleep for 4 hours. After lights on they're still perfect... "

This is what's telling me that it's heat stress. As your lights heat up the room, your plants begin to stress. All strains are different, even the same strains vary but high heat/humidity can cause other problems that affect the plant. (like over/underwatering) Check your roots and see if they aren't rotting or root bound, but if they were you'd have the droop constantly.

Is your room sealed or ventilated?
 
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Y

yosim

Well-Known Member
they look overwatered so check your autopot valve is working properly, maybe even shut off the line for a day or 2 and see how they go then, do you have the airdome installed?
 
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