Leaves folding up and plants look like they're wilting

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The plants are in a greenhouse with well rotted cow manure and hen poop as ferts. What could be causing the folding of the leaves and wilting tops of the plants? I'm not sure if the wilting tops is actually anything bad cause they all point in the same direction - at the sun, and will follow the sun as it moves across the sky.

try giving it more phosphrous???

Hey dude nice looking setup
how long has it been since u watered em kinda just look like they need a drink to me and yes the plant will bend toward the sun a bit

i was gonna say watering next
i just couldnt remeber it