Plants naturally droop during the dark period. It is normal. As long as they quickly react to the light and perk back up you should be fine.

Also, DO NOT disturb their dark period or they will not like it.

Good Luck.
Dorje113 Reviewed by Dorje113 on . what is happening to my plant after I changed to 12/12 lighting... I don't understand, it was all fine at first but then one of them started acting weird... during the 12 hours of darkness the plant seems to be okay because when I come in to turn on the light the leafs are all normal and pretty but then an hour or so after the lights are on they start to droop, I don't understand because it's not too hot, I have managed to keep the temperature about the same since they seedlings... on the pictures you will see the difference, the first picture is right after Rating: 5