Seedling leaves drooping BAD

What's wrong with my plant? I'm growing in coco coir with perlite. Leaves were fine yesterday but extremely droopy when I checked on her today. Humboldts secret nutrients. PPM is about 300-400. Using cal-mag, tree trunk, golden tree and a+b every feeding.

Are there drain holes in those cups?........I don't see any.
Are you feeding to run off daily?

MickFoster said:

Are there drain holes in those cups?........I don't see any.
Are you feeding to run off daily?

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Yes I have a bunch at the bottom

I would make sure my nutes are the right strength and pH and just keep going.