Drooping in DWC

Sup Guys ,

I am not sure whats wrong with my one plant its drooping for some reason but not the usual light droop .
I am growing in DWC .
the tank is half full displaying some of the roots for oxygen and have a large pump bubbling the water .
I am sitting at around 450 ppms with a PH of 5.9 .
my temperature is at 78 with the lights on and 72 with the light off.
My relative humidity is at around 60%.
I do add a around 3ml per gallon of hydrogen peroxide to avoid root rot. and my roots are really white and healthy.

Any advice would be great ?

Suggest dropping ppm to about 350 and measuring the temperature of the res solution. Your level should be just under the net basket. An inch is fine.

I had the same problem a while ago. It turned out I had the water level too low, and the hydroton was drying out and the plant was dying of thirst.
As said above check your water level.
Are the roots in the water yet?

Yes the roots are in the water for sure

Leaves droop, especially after a long day.
I wouldn't worry unless the plant starts falling over.

Hugo Phurst said:

Leaves droop, especially after a long day.
I wouldn't worry unless the plant starts falling over.

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Yep, they droop. With DWC, there's no over or under watering, which is normally he cause for drooping leaves.