I wish I had better news. Unfortunately these plants are pretty much cooked. You may be able to save them but I'm thinking you would be far ahead to pull them and start from scratch.
So tell me about your potting mix? Is this a pre-mixed and buffered Coco or a blend of Coco and peat moss?
A picture of the bag label would help.
Young plant tops like these should be about 30" bellow that light. No closer! Until your 2 weeks into flower then maybe let your plants grow closer but not less than 25". Not ever!
These days growing pot is a lot like being a mad scientist.
Do you have?
E.C Pen?
PPM Pen?
PH pen? with powders for calibrating.
PH up and PH down.
Dolomite lime, Granulated Gypsum or
Cal-mag?
I find it handy to have a few syringes around for measuring. A 3ml and a 10ml for each bottle. An elastic band around the bottle keeps them handy. Nutrients are very powerful. Fallow the feeding chart to the letter. Measure very carefully!
The first 2 or 3 weeks after coming threw the ground your seedling is busy growing a root system that will support it's new top growth. It's easy to get fooled into thinking you need to do something. Don't. The seedling has everything it needs to grow up to the 2nd set of leaves. Only then is a light feeding required.
I have found that the pink autos a little difficult to start. See if you can get your hands on a Northern lights Auto.
They are more forgiving until you get yourself dialed in.
Starting seedlings in Coco.
Pop over to coco for cannabis. Do a little reading
Cannabis grow guide: articles, tutorials, DIY projects & more! Dedicated to the science and practice of growing cannabis in coco perlite and other media.
www.cocoforcannabis.com
Then come back and keep us company. There are a lot of guys that know Coco in the forum.
But a couple of hours snooping around Coco for cannabis will work wonders for you.
I tried Coco but now use a home brew. Not coco. But works much the same.
All the best.
Ron
