hot soil

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These sprouted around 2 days ago under a 400w cob led. I’m a new grower and I’m just worried as to what’s wrong..... maybe overwatering or underwatering? I dude use AN micro grow bloom once but I since stopped as I learned you need to wait to use that. And the big question is can the plants get...

So here is my nyc diesel autoflower about day 40 from seedling and leafs are started to get yellow/orangey. I grow it in organic soil and thought it was too much P in my nutes, then thought not enough K. Now i'm thinking its light burn since I had my led closer. What do you think ?