Leaves are yellowing then wilting up.
BELOW: If you zoom in on the leaf you can see white organisms along the midrib and veins.
Indoor grown under LED lighting with air conditioning.
These plants are in Miracle Grow Potting Mix with 6 mo fertilizer. I use FoxFarm "Big Grow" 8-4-4. It is possible the problem is photoinhibition as I doubled the light intensity a couple of days ago. I keep the lights on 24/7. I moved them outside in the shade to see if they will recover.
I am experimenting with 2700K 90 CRI and 3000K 80 CRI strips of LEDs. I am trying to find the most efficient height and intensity. I made some very flexible fixtures where I can easily adjust height and light intensity.
The "white organisms" were nothing. They were reflections off the trichrome.
Below is a close up. It's clearer if you click on the photo.
The plants that I moved outside recovered. They look healthy now. Not very big but they were kept in the shade and 3" peat pots. I'm in Tampa so growing season does not start again until September.
I had the lights on 214/7. Tomato plants do not like a 24 hour photoperiod. Added a timer that shuts the lights off from midnight to 6 am.
This is a subsequent planting. The seeds for these sprouted on or about June 14th.
These pictures were taken July 5th (top) and July 17th (bottom). The partitions are 24" high. So the 16 watt plants are over 12". No yellowing.
They would probably bigger then 12". I left them in the 1" peat pellets too long, they were root bound and about 3" high before I transplanted. Also I have been having problems with the peat pellets. The roots were having a hard time break through the netting that hold the peat. From now on I will transplant the seedlings within 1 week and I will remove the netting.