Always drooping (not a watering issue)

This is my first organic grow. I have autoflowers that always droop in an indoor tent that vents outside. I assumed it was a watering issue because the leaves drooping. However, I have mixed up the watering schedule several different ways nothing has stopped the drooping. Today I took the plants Outdoors for the first time ever and they perked up immediately and within six hours they look great. Any thoughts on what I can do in my tent? Here's the before and after pics. Same day, about 5 hours apart.

The other plants in the same tent aren't having this issue.

4x4 grow tent
Mars Hydro FC-E4800
Michigan Made Mix Supersoil
Down to Earth dry amendments
3 fans
4" inline w carbon filter

What is your indoor humidity in the grow area? Power used on the light and distance to the tops?

hotrodharley said:

What is your indoor humidity in the grow area? Power used on the light and distance to the tops?

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RH: 45%-50
Temp: 77f
Light is at 100% currently 24" above canopy (more distance than mfr recommended) ~700 par to the top of the canopy.
Plants are 7 weeks from seed

1trkmind said:

RH: 45%-50
Temp: 77f
Light is at 100% currently 24" above canopy (more distance than mfr recommended) ~700 par to the top of the canopy.
Plants are 7 weeks from seed

Click to expand...

You need to raise the humidity. If humidity is too low the stomata remain closed preventing transpiration. Try raising it to 70%.

hotrodharley said:

You need to raise the humidity. If humidity is too low the stomata remain closed preventing transpiration. Try raising it to 70%.

Click to expand...

Wow! that high? I'll give a shot. Thanks a lot! I'll do some reading into the relationship of stomata, humidity and transpiration.

Your tent doesn't have enough light for late in flower, but, I'm no LED expert
I wouldn't introduce those plants to direct sunlight without hardening them off a few days

Herb & Suds said:

Your tent doesn't have enough light for late in flower, but, I'm no LED expert
I wouldn't introduce those plants to direct sunlight without hardening them off a few days

Click to expand...

We'll see how it goes. I'm shooting for 850 - 900 par in late flower which the light can produce. Last grow yielded more than a gram/watt. But, I'd like to see the buds a little denser. I'm still learning.