what the hell is this?

, GRRRRRR, I COMMENT ON A PROBLEM LIEK THIS YDAY WITH ANOTHER USER, AND NOW, OVERNIGHT,

THIS HAS HAPPENED
xp2c05.jpg
 
Its in rockwool, and they are 12 days old, ( no nutes " yet" )
What's the EC of your water? If none of that explains it, you're down to temperature and humidity. There's only so many things to go wrong bro. I'm not going to play this guessing game anymore so if you want to know, you'll have to list every detail... and maybe in a new thread too.
 
its either
1. Heat stress (less likely)
2. overfeeding nutrient burn. Flush soil with bottled water for a few days.
 
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