Happy growing and good luck!
100 watt light at 18”? You’ve got a bit of stretch showin, a 24hr light cycle is hard on those Lil guys even harder on them when you’ve got to change it.
@2highforu, 100watt equivalent. Cheap bulb. I use a par meter. For seeds/seedlings I keep at 15-20DLI. Regardless of intensity/duration.
This also prompted me to buy a new light set up lol. Stay tuned!