prokiller420 said:
and my lowest temp at night is 16.5 to 18.0 celsus when i watered them and they wilted i bring them out of the grow box so its more easy to water maybe the wilting is because it goes from 27 c to 18 celsus plus water maybe thats why they wilted
Plants are always going to wilt when the light are off, that's just a given. But the excessive temp swing from lights on to off can have them taking a bit longer to straighten out.
Try to make sure you only water at lights on time. That gives them more time to transpire throughout the day. Another way to raise the RH a bit is to floiar spray them about an hour before lights on. This will give the room some extra moisture while giving them enough time to evaporate the sprayed water so the harsh light doesn't magnify the droplets burning the plants..
You might want to include more information about your setup in your journal, just to help us when answering questions. like.
-What is your light schedule? 18/6, 16/8, 24, GLR?
-Are you intending to flower these plants in that same cabinet or do you have another spot for budding?
-What kind of water are you using to feed, tap? RO? Distilled? filtered?
-Do you have a PH pen?
-What's in your soil mix?
I'm guessing from the video that your cabinet is in the Garage or basement? which would explain the temp swings.
You don't really want to have more than a 10 degree swing between lights off and on.
Is there any way to raise the temperature a bit in the surrounding room when lights are off?
Make sure your water isn't too cold when watering as well, that can also make them wilt.
If you pick up a cheap floating thermometer at an aquarium store, you can keep say a 5 Gallon bucket in a warmer place in the house. Try and aim to keep the water at around 68 degrees F. Another bonus to having your water in a bucket is if left for 24-36 hours to sit, Chlorine will evaporate from the water making it cleaner for the plants.
