Hi all,
I’ve grown three cycles without any issues in a 40x40 cm grow with a 120W quantum board using Samsung L301H LEDs.
I decided to upgrade to an 80x80 cm grow and added a second 120W quantum board. After that, I ran into problems. In the last cycle, I had upward-curving leaves, foxtailing and lots of seeds.
In this new cycle, when I switched to flowering, the same issues started again.
There are no pests; I did a thorough inspection with a 60x magnifying glass. The temperature inside the grow is between 24°C and 27°C at the plant base with the AC off, and I have a fan blowing at the top and an exhaust fan. I’m watering with pH 6.2 to 6.3, doing organic growing, and there’s no over-fertilization.
I fixed all the issues from the previous cycle, but the problems persist.
The only variable that stayed the same is the amount of light. I started with 20% power on each quantum board, and just before switching the photoperiod, each was at 50% power. So, 4 days ago I removed one quantum board and set the remaining one to 60%, since I read that too much light can cause these problems, even if it’s not too hot.
I don’t have a ppfd meter, only the cell that’s not accurate.
If that’s not the issue, I don’t know what to think anymore.
Do you guys think it’s possible that they’re like this because of too much light only?
I’ve grown three cycles without any issues in a 40x40 cm grow with a 120W quantum board using Samsung L301H LEDs.
I decided to upgrade to an 80x80 cm grow and added a second 120W quantum board. After that, I ran into problems. In the last cycle, I had upward-curving leaves, foxtailing and lots of seeds.
In this new cycle, when I switched to flowering, the same issues started again.
There are no pests; I did a thorough inspection with a 60x magnifying glass. The temperature inside the grow is between 24°C and 27°C at the plant base with the AC off, and I have a fan blowing at the top and an exhaust fan. I’m watering with pH 6.2 to 6.3, doing organic growing, and there’s no over-fertilization.
I fixed all the issues from the previous cycle, but the problems persist.
The only variable that stayed the same is the amount of light. I started with 20% power on each quantum board, and just before switching the photoperiod, each was at 50% power. So, 4 days ago I removed one quantum board and set the remaining one to 60%, since I read that too much light can cause these problems, even if it’s not too hot.
I don’t have a ppfd meter, only the cell that’s not accurate.
If that’s not the issue, I don’t know what to think anymore.
Do you guys think it’s possible that they’re like this because of too much light only?
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