Canoeing leaves

I need some help. I’ve got 3 autos 2 weeks since sprouted growing in coco in a 2x2ft, under a 250w hps. The light is just under 2ft away from the tops and I’m getting 22c & currently on 65%. They were just watered 6.2 ph with shogun samurai nutes. I’m not really sure where I’m going wrong

My guess over watering even in coco but not sure if you maybe just watered

These autos were at 2 weeks in soil and I would assume should be bigger if in coco. And sorry I just noticed said just water. Maybe lights to close not familiar with running a hps but under a 150w led I run around 24 inch at 75%

Autodoctor said:

These autos were at 2 weeks in soil and I would assume should be bigger if in coco. And sorry I just noticed said just water. Maybe lights to close not familiar with running a hps but under a 150w led I run around 24 inch at 75%
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Those look great! Thanks I’ll raise the lights a little and I’ve also took a fan out I think there could have been a bit too much wind hopefully they’ll settle down a little

Looks like powdery mildew also.....I think.

Looks like humidity damage! Had this happen to a few of my seedlings when I wasn't paying attention to my humidifier.

After raising the lights yesterday the newer leaves are starting to do the same as the older ones, I’ll try lower the humidity and have a look into curing mildew. Thanks guys

Make sure your humidifier isn't blowing directly on to the young seedlings as well. Twisting curling leaves usually a sign of heat stress. I don't grow in coco but maybe back off on the nutes. Shouldn't have to feed plants at all until they are a few weeks old.

Looks like phosphorus from overwatering to me. The leaves get stiff and darken before necrotic blotches appear. Also looks like nutrient burn.
If your temps are too cold and your watering to much and often this will happen.
Let that soil dry out quite a bit. Autos don't use alot of nutrients compared to photos. However, they have alot to do in a short amount of time so just make sure you have a well rounded nutrient on hand and use it very very sparingly.

Get your day/night temps in range and stable.
Keep humidity at 50-60% and lower it to 35-40% when your in full flower.
20/4 is a good day/night schedule. Last 3 weeks put them at 24/0
I'm a photo guy and grow almost exclusively. Autos have their place but in the last 12 years I've only been happy with 1 auto out of probably 20.
Also IMHO you'd be better waiting the same amount of time to harvest and just grow photos. Save on some electricity in 12/12 flower and crop out waay heavier.

Autodoctor said:

These autos were at 2 weeks in soil and I would assume should be bigger if in coco. And sorry I just noticed said just water. Maybe lights to close not familiar with running a hps but under a 150w led I run around 24 inch at 75%
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From my past experiences it happens when the light is too close and it canoes up to block it. I would go by the manufacturer's PAR chart. PAR of 1000 is for when the plant hormones kick into flower. During veg, a PAR or 600-700 is a lot better. Especially when they get 16 hours of light a day, the DLI or daily light integral added up is going to be pretty high for the little plant. They won't open back up over night so give it time to adjust if you need to move your lights.

What’s your humidity at? When leaves curl like that it can be issues with VDP. They are having issues with transpiring, most likely too low of humidity.