nitrogen toxicity? cal problem? stress? I'm not sure what is happening to these.

The larger plant started drooping 2 days ago, the roots are healthy. I water twice a day with coco and vermiculite mix and my aeration is incredible. The smaller plants older leaves are curling completely in, then withering away. What's up with these?

I'd try less amazing aeration, richer soil.

GreenLogician said:

I'd try less amazing aeration, richer soil.

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But I'm not using soil. Coco coir is more of a hydroponic growing medium. Do you think I should increase my nutrient mix? I'm only at 1/3rd strength.

I think he is suggesting you stick to soil

rya700 said:

View attachment 3619686 View attachment 3619687 The larger plant started drooping 2 days ago, the roots are healthy. I water twice a day with coco and vermiculite mix and my aeration is incredible. The smaller plants older leaves are curling completely in, then withering away. What's up with these?

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your over watering

you should be watering 1x every 2-3 days depending on the media your using sometimes every 3-4 days

the soaking wet soil is causing the plant to basically go into lockout which is why your yellowing.. the droopy leaves are your first sign to overwatering other than the fact you stated you water 2x a day..

It appears to me that that they are nute starved, especially N. You medium will hold either no nutes or very little, and I would use full strength nutes at this stage, and considering your medium, it should drain pretty quickly, and probably the plant has only a small root system, so that won't really hold much water also., I would water every other day, lightly. They need a boost in nutes, that's my opinion, and watch the overwatering. The medium should be moist, not wet (that is very important),

Agreed with over watering plus the vermiculite you have mixed in stays wet fir a good bit. Try watering 1 good time and wait till the leaves just about to droop then water again

Noted. Thanks. I'll try all those.