That light is just a bit weak is all, let them shoot roots and move to new lighting. That's an impressive little system there lol..The lights are as close as I can bring them.
I used
And germinated from seed in rockwool
It depends on how close you plan to have the light. I'd try them dimmed and slowly ramp up the intensity as plants get bigger. No point in wasting electricity if you have the option to dim in veg.I've got an adjustable 300w light in my tent when I transfer them what wattage should I start with or should I turn the on to the max from the start