Plants drooping over

A question from a fellow grower:

I have to take my plants out of grow tent for 2 days without light. I am running a DWC in 10 gallon tote with 5 gallons of fertilizer solution. I placed the plants back in the tent with 12hrs of light. This morning I noticed the plants are severally drooping over. I have added water to the reservoir and may have overfilled with water. Net pots may be to far in the fertilizer solution. Does this make sense? Reduce reservoir level and make sure large distance between net pot and reservoir. Should I stop the recirculation of water for a couple of days.

Maybe roots are root bound , what size is your reservoir and yes you need an air pocket in between the net pot so roots can breath .