Hello, Does anyone know what that might be please?
The plants are 5 weeks old.
Switch to Flower 12.3.2022
I have dirt and PH follow the instructions from 5.8 - 6.2 but I always give 6.00
I’ve been given advice that it might be a pest (a porpoise) but when I look at the bottom of the leaves I don’t see any sign of insects anywhere. No black dots nothing.
It’s found at the top on four plants side by side.
Maybe it’s moving on but not fast.
In 4 days, the color of these “scratches” changed to yellow the first were brown.
The leaves seem to wilt and curl to the touch dry.
I was giving the dressing 0.5L but today I’ve watered it with 1L. (could this be a consequence of lack of nutrients) ?
I have 600W LED lights
(It’s my first round I’ll be glad for any advice thank you) $ -I’m sorry about my English
The tips of the leaves are hooking a sign of Calcium deficiency the outside with the leaves are dropping down making an upside-down cup sort of. This is magnesium deficiency. The crunchy edges of the leaves appear to be potassium deficiency.
Hard to see with the pictures but it kind of looks like there could be some speckling on the leaves. Check for spider mites?
The raised ridges on the leaves look like heat stress possibly…
Maybe some excess salt in your soil are blocking out a bunch of nutrients. When’s the last time you flushed?
Overall they look good, pretty healthy! I’d probably add some cal mag from here. Also the increase in volume of feed was likely a good idea. This is a thirsty time for them.
You’re welcome! I cant rule out pests from where I’m sitting. But if you cant find any then I feel good about that. Sometimes too much light can manifest in mag deficiency and curled thin weird texture leaves. What are you doing for light. How far from canopy?
I have not grown with a bar style led, I know they are designed to be kept closer to the canopy…but I’d start there and lower intensity by raising the light or reducing power since you are already feeding a balanced line and adding cal mag. I bet they perk right up if you back off them a bit.
