Hi,
I have 12 plants in coco, autopots with air domes. Running canna nutrients. 3rd week of flower. Ec 1.85, ph 5.9. they are in the 150x150 tent. Under 660w 6 bar style led kept 60 cm above the canopy. I kept it lower for a few days but the light level never exceeded 900 ppfd anywhere and the symptoms occur on leaves that get less than 600 ppfd. (the tent next to it has the same plants showing no signs where its 900 ppfd everywhere, but the plants are in coco drip) I started noticing some leaves getting a bit paler/cloudy litghter green. Starting from middle to the tip. Not the the ones on the very top, mostly second from the top. The bottom leaves seem fine. Not all plants are affected. What is strange its happening in the areas where the light intensity wasn't necessarily the highest. Never had this in this stage.
At the first glance looked like mg deficiency (but started on the far end) or light burn (but also on not so exposed leaves). But the fact it's far end half, points me to potassium deficiency more. What do You think?
Few days ago they were praying a bit (last pic) so maybe potassium deficiency with a little too much light?
Cheers everybody, happy growing.
I have 12 plants in coco, autopots with air domes. Running canna nutrients. 3rd week of flower. Ec 1.85, ph 5.9. they are in the 150x150 tent. Under 660w 6 bar style led kept 60 cm above the canopy. I kept it lower for a few days but the light level never exceeded 900 ppfd anywhere and the symptoms occur on leaves that get less than 600 ppfd. (the tent next to it has the same plants showing no signs where its 900 ppfd everywhere, but the plants are in coco drip) I started noticing some leaves getting a bit paler/cloudy litghter green. Starting from middle to the tip. Not the the ones on the very top, mostly second from the top. The bottom leaves seem fine. Not all plants are affected. What is strange its happening in the areas where the light intensity wasn't necessarily the highest. Never had this in this stage.
At the first glance looked like mg deficiency (but started on the far end) or light burn (but also on not so exposed leaves). But the fact it's far end half, points me to potassium deficiency more. What do You think?
Few days ago they were praying a bit (last pic) so maybe potassium deficiency with a little too much light?
Cheers everybody, happy growing.
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