Top leaves curling a inwards and drooping

About 2 days ago a day after watering the tops of all the plants started drooping and curling inwards, not sure what’s wrong the plants have been super healthy the day before.

Grow info:
1 gallon pots
Sea of green
100% coco coir
Last watering ec=1.0, ph=6.0, 800ml/plant, bio bizz nutrients, had no run off
Hlg 550
Temps 20-28
Humidity 50-70

I think maybe it had something to do with nutrient build up or watering cause I have very little runoff the whole grow.

Photos

All my plants died and the stems became super swollen... I can not find anybody else on the internet who has had this problem with the stems swelling

They look like they got too hot and too dry. Too much transpiration and the leaves do that to try and slow it down.

That’s what I thought too but they appeared different to heat stress and the medium did not dry out. I had other plants in the room that were perfectly fine could it possibly be some type of disease?

I thought it was bitter beer face like they didn't like what they were drinking. It could be heat too or some kind of light stress. Hard to figure, 1 EC should be safe unless your meter is off.

is this your first attempt at a SOG in 100% coco?

osowhom said:

is this your first attempt at a SOG in 100% coco?

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BTW sorry about your girls

Yes first time trying this method and I put them into flower early, I suspect maybe they couldn’t handle the stress or something

osowhom said:

BTW sorry about your girls

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Thank you it was very depressing

zombie.tm said:

Yes first time trying this method and I put them into flower early, I suspect maybe they couldn’t handle the stress or something

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i would think it would be difficult with that many plants wouldnt soil be a better choice for a SOG easier to keep them fed