Will my clone survive

give it time n dont overwhelm it with strong direct light... maybe a light feeding in 5 days. sometimes clones barely yellow and other times they can come out looking pretty rough like yours. doesnt seem to be so bad that the plant won't recover.
 
Foliar feeding some seaweed might help. If it has roots it should recover with some new growth eventually.
 
I agree, it needs a mild nute of some kind (not familiar with B52). Looks like Mg and maybe N deficiency. I wouldn't worry about the N yet, but a foliar with kelp will give it some Mg, Ca, and trace minerals. I use Eco-Nereo Kelp, it also has Humic acid. Don't give it intense light yet. How well established were the roots?

Edit: just looked up B52, I think that should work fine for a foliar spray, good luck.
 
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