Only one of nine micro dwarf tomatoes is thriving.
After successfully starting my outdoor heritage tomatoes in this tabletop garden this spring I cleaned it all out and started nine Pinocchio Rouge micro dwarf tomatoes to keep indoors. I germinated them in a glass tray between sheets of paper towel and they all sprouted within 2-3 days. On the fifth day I transferred them into pucks. One of them grew quickly from there but the others took a week to even show seed leaves above the puck. Of the nine, one clearly died off and that single tall one is thriving, but the rest are struggling to progress even after several weeks and seem stuck. The seeds were purchased in April and are from 2025.
The light cycle is 16/8 and the pump cycle is 3 minutes every 30 during the "day" and 2 minutes every 60 at "night". Temps are running around 25C. This is a pretty good garden with a larger and brighter than average light head and I've successfully grown a variety of vegetables the past couple of years. I have all three spectra turned on... white, red, and blue.
Can anyone suggest why only one seedling is doing well? Anything I can do to recover the others?